The Model Craftsman: Volume 10, Issue 1 – June 1941

| TIP TOP te eet PEPE T Ee VOVVOWL QR AUATUVVGUHTCOET | mem | || EDITED BY R, P. DEZENDORF PLANK-ON-FRAME CONSTRUCTION FOR MODEL YACHTS By CHARLES H. FARLI:Y (EDITOR’S NOTE: This is the third of a series of several articles on the subject by Mr, Farley, a nationally recognized authority.) PREPARING MATERIAL; BUILDING THE YACHT 4. KEEL APPENDAGE, or FIN. (See Figs. 3 & 4). THE keel appendage includes that part of the yacht which is below the “canoe-body” or hull proper, and is sometimes called the “fin.” We will use “fn” for brevity, to indicate the lead ballast and adjacent wood farts. Some fins are part wood ard part lead ballast, some are bronze shells filled with lead. Sometimes the lead-line runs straight, at others takes off at an angle from the horizontal. If the after end of the fin is of wood, this part has to be screwed or fixed to the lead, especially if the fin is “removable.” It is preferable to cut the separation line, if any, before shaping, and while the stock is in square, or block form, as a better job can be ef- fected, and with greater ease. As shown in Figs. 3-4, the after end is treated in this manner, then screwed together and worked down to final shape. The best method is to use two pieces of wood glued together, as in the case of the backbone. The alternative is to used a solid piece, in which case the center-line will have to be drawn in (and replaced) several times. Keeping the fin one inch wide will allow lining up with the backbone on a flat surface, assuring a perfect fit and having the fin absolutely plumb with the rest of the yacht. If extra thick- ness is needed, for belling out or stream- lining, this can be added AFTER the lining-up process by simply gluing a piece of the required thickness on either side, before final shaping. (See Figs. 1 and 2.) Proceed as follows: (a) Plane the block all four sides, square. (b) Saw off at lead-line. (If the fin is all lead, or the upper portion a horizontal line, it will be unnecessary to saw; simply use a flat piece of wood.) (c) True up sawn edges with jack- Top photo shows the boat as built upside- down. Note frames at midship section are already cut away. This is an alternate it method, and necessitates backing up frames with a solid piece of wood. Lower picture shows the battens added and a few of the top planks fitted. The top battens were re- moved as the planking proceeded. Further photos and drawings will appear in the next of this series, Earlier steps were shown in the April and May issues of Model Craftsman. plane, flush and straight, made perfect cut. Fasten together with wood screws, edge flush and square, and unless saw both parts keeping top taking care to keep screws out of the way of further saw-cuts when shaping. (d) Mark station-lines all around block. Mark the WIDEST and LONGEST combination of water-lines, plan view, on the TOP face of block. This assures preserving the shape of the fin’s greatest width and length, which in this case, occurs in the lower, forward region. Also mark the ACTUAL shape, as when finished, of the water-line at the top of the fin. This water-line wil! be much narrower and shorter than the one used for sawing out, and is worked down AFTER the other larger one is cut. Mark location of holes for the bolts used to hold fin and backbone together. (e) Align fin with backbone, brad to- gether, and check by laying on flat sur- face as previously described. Turn over and check also. If tubing is to be used for removable fin, fit these to the backbone BEFORE drilling holes into the fin, so all will register perfectly. Drill holes for bolts through the backbone and down into fin, using drill-press if available. It would be best to screw backbone and fin together temporarily for this operation. Drill one set of holes at a time, re-check for alignment before drilling the others. Brass rods, 3/16 inches in diameter is recom- mended for the bolts. Thread with 3/16 die, to make wing-nuts. These bolts can be delivered at the foundry and cast right in the Jead, saving considerable trouble and labor of drilling the lead. Insert the brass rods, and check for alignment. If any extra width is necessary, it should now be glued on. If this width is only in the lower part of the fin, it will be unnecessary to cover the entire surface of the fin, but this is a matter of taste. After glue is dry, clean off any excess glue, and saw out on the WIDEST and LONGEST water-line shape, marked on top of block. DO NOT saw to the water-line shape which represents the finished top of the fin. This is worked down later by plane and chisel. Tue MopeL CRAFTSMAN Replace sawn-out portions of block, including the one which has the profile marked upon it by bradding to block, back in place as near as possible. Use this line to guide you in sawing out profile. This method keeps the block square with the band-saw and its table. Shape fin to final form, using templates. NOTE: Final check is made later, when the backbone, fin, and skeg are mounted on the frame assemodly, and trued up from building-board, following process shown in Fig. 6. 5. SKEG (See Fig. 5) The skeg may be of wood, ajuminum, or Bakelite. The latter is recommended as it can be used very thin, anc is twist and water-proof. Good quality Bakelite does not chip, may be drilled and tapped easily, and will not split if handled sanely. Aluminum is subject to corrosion and is difficult to attach to the backbone. 1 ww ow Bakelite 4%” to 3/16” in thickness is used with equal success, and the joint where it butts against the backbone is filled in with a Plastic Wood or Duratite “fillet,” which fairs it in and serves as additional support. The skeg may also be slightly recessed or mortised into the backbone. Bakelite cuts easily with Holes for fastening the rudder pintle should be drilled in the Bakelite skeg before the latter is finally mounted on the backbone, as it is difficult to bore holes in this position. (See Par. 6) If wood screws are used, first use an iron screw to cut a thread, remove, and insert brass screw. A drill-press is almost a necessity for drilling the vertical holes, which pass through the backbone and down into the skeg. Clamp the skeg to a square block to keep plumb with the drill. Holes should be a tight fit for either No. 2-56 bolts when using the 1%” stock, or for No. 4-40 bolts when the 3/16” stock is used. Drill down MORTISE WE HEAR FROM WALLY INWALE NOTCH WE have received a letter from our traveling ambassador, Mr. Wally Schlaefer, of the Washington MYC. We publish the letter in full. Dear Editor: “A year or so ago I heard there was a setup near Houston, Tex., that was a swell replica of the Washington Monument and its reflecting pool. So, while at Houston I inquired around and found wnt The lateral holes can be drilled by hand, and are about 3/16” diarneter, just nuts to take the bolts and pull the skeg COPING~SAW CUT The pool lies N.W.—S.E. The monument is at the S.E. end. The pool is perfectly constructed, and is from 3’ to 6’ deep. It is filled by rain, and, according to the WPA foreman, it rains plenty, and the water has to be lowered quite frequently by valve. Nobody I talked to ever heard of a model yacht. The pool is 20 miles east of Houston on the site of the battle of Jacinto (battle fought in 1835 and 1836). Hardly anyone lives nearby, some oil refineries are about 8 miles away, and the town of \@ @/_TeTeI FIG. 13 FRONT FACE OF FRAME READY TO MOUNT ‘Due to its isolation, J did not think pictures of the pool at San Jacinto, but there were only 2 films left in the I discovered a park in Houston showing a reflecting pool. I am sure sorry 1 found out too late about that. It being in a park, there may be too many trees around it. This pool is about 3 miles ing to try to get in the Naval Service again. We will stop at San Diego, Long camera. “We have a new trailer now and are heading toward Seattle where I am go- and San Antonio. On the Houston map, Beach and Berkeley on the way. “Glad that South Jersey has its new That Kindest regards to all. there does not seem to be the hobby interest there that one finds up North. waste sure is “Sincerely, of (Editor’s Note: It is a shame to think that pond at San Jacinto going to for lack of model yachtsmen to (Continued on page 57) LINE FIG. 7 LES FIG. & FRAME WITH BASE-LINE CUT ROUGH FRAM The backbone and skeg can be kept FRONT om OF le I LJ | = the skeg, so the one inch thickcompensated for. Test on flat as already described. After linprocess is completed add the CROSSPIECE : —s INSIDE EDGE °. am| tJ TOP OR BOTTOM VIEW FIG.9 CROSSPIECE y, ZL 7 crs fillet, a very little at a time. Using too ! NSIDE ©. eC i 7 qoerecce 7 h a FIG. 10 | re xe | A CENTERLINE LINE 5– 373 FRAME: CROSSPIECE ADDED 4 : & swell. “Wally Schlaefer.” ss GYIDE plumb by placing a wood blocl: on either (Continued on page 59) completed. pool from the business center. But I sure would have made some effort to start things going if I had known of it. I feel sure that one could start a club if he spent a year or so there. However, skeg lines up perfectly as you proceed. when dry. could have gotten more I wish “T a short stay there would do any good toward starting a club. So we left and came to San Antonio. Yesterday, I picked up a Texaco map of Houston additional holes until you are sure the filler may result in one side drying than the other and imparting a to the skeg. Also fill in lateral with plastic wood, and sand flush BOARD ON BUILDING La Port is 10 miles away. up close to the backbone. Locate holes which must now be drilled in the backbone, and one at a time, drill them through. Bolt to skeg, and do not bore much faster twist holes TO DRAIN HOLE large enough to allow insertion of the side of ness is surface ing-up \ Ee | | FIG.12 FRAME CUT FINAL SHAPE out how to get there. Well, sir! I was sure surprised. As you can see by the picture, it is just what the doctor ordered. No trees or anything to bother the wind except the wind from the S.E. into the lateral holes. SOi hse SOHO eH ‘ a ee a small coping saw. NEWS AND NOTES FiG.1) PATTERN LAID OFF: FRAME READY TO BE CUT its attended members. dinner by more Waturally, the high spot of the evening ceme when trophies were awarded the members wha]ache | Goce | cols | having the highest point the past racing season. for The awards were, in part, as follows: George Nutting of Bloomfield, first | sie | Wn | ce | aden | wn | ein | win | Gece | ibe | tba | wn | sobs | ea | Se |ache | en | taku | hu | sobs | Soke | ha] acho] cbs | place; Lou Stone of Newark, second place, and Stewart Blodget of Glen Ridge, third place. Along with these, various other prizes were also awarded. George Nutting, incidentally, took first place and prize at the New York Coliseum, April 20th, at the Eastern States Indoor Championship Meet with a speed of over seventy-six (75) m.p.h. George won with a car of his own de- sign. Five other members of the same club, out of the ten who entered, received awards. The club is certainly mighty proud of these fellows. S| |WO | WS | S| ND | i dent; Stewart Blodget, Tagart, treasurer; | steward; and Charles licity manager. | tei secretary; Lou Stone, Ken exhibits. Although country, and it is growing larger every Races are held every Monday week. field of hobbies cal hobbies came in for a large share of interest. Railroad equipment, race cars, and gas engine airplanes all were shown. All entries were drawn from employees of the banking firms. Not the least among the more interesting mechanical exhibits was a “big hook,” exhibited by Edward Gies. This piece of mechanical perfection was built to half inch scale, and all parts operate. The hook can lift eighteen pounds, and an electric motor operating at six volts is used for motive power, A Cyclone-powered race car, con- structed by Harry H. Chase, was greatly admired by the assembled spectators, as rant the organization of a miniature railroading unit within the club, and plans for this are under consideration. Bob Graham of Jersey City, N. J., member of the Metropolitan Power Boat Club, has been recently doing in considerable Class D boats. reHe Bob promises to get us some new pic- |e | we complete summer schedule will be under way before long. tures of his outfit’s current activities so we can show you other fellows what’s what with the Metropolitan club this | SS | ee | extra gears an These and set of could bring down. BEN KEMP, Commodore C.M.P.B.A., 3935 Diversey Ave., Chicago, Ill. for your cluded. Super-Cyclone motor is in- spur gear Streamlined axle. drive High height models ment: only in front By actual experience, it has heen discovered that no two motors will act exactly alike or put out the same amount of power, but, by experimenting with different gear ratios, the maximum speed of a car is obtainable. A fuel formula is also given. eliminates ratio. Weight wheels. gear 4% in. stock, available Mercury, front Dooling Mercury, rear Rexner Ariel DeElxG: Richter until the ice drove some front Ibs.. other popular immediate drive shaft. ship- ………. $29.50 ……….- 27.50 Matthews Achiever, Matthews Achiever, DELERGER AMixflow TOMPOe: Bullet, Delaxe Bullet; StMMdard 26.00 …………….0005 32.00 Standard DeLuxe Drive…… 29.00 Drive……. 32.00 si: wosisiwes oe a seiciowaxios 29.50 oi vcccciecicioais ore sasissaeers 39.50 … 2… cece cts ce cnccces 23.75 «isnewcevasawe svecewenss 21.50 Bullet, Rough Casting Kit ………… Peetiess NO: 2 ak cc wswornwwsis tu weeareay’s 11.75 15.00 MOTORS EIGURBG “OES” Bogen sierateebaie lee TOMiAds: DALLAIRE ee 35.00 24.00 MODEL Wyoming eee eenlomlesixet cassia Keeweeieeen eee AIRCRAFT Avenue ee CO. Detroit, ee ee Mich. ee ee HHAAT THETHE MODELERS KNOW TWTHO fin MANUFACTSUMRIETRH COIL : WISHES A CHISELING ON IGNITIO coil on the leading proof Bakelite case, snap-on terminals, extra-long renewable hi-tension lead. Wt, 21 OZ. sss everscersvararere #5 8 6 $2.50 “COMPETITOR” Moderate priced midget-size coil made possible by a new development of Smith Ignition Engineers, Equipped with specially ‘designed hi-tension clip for the smaller spark plugs. Wt. 1% oz. ………. $1.75 types. capable of operation up politan District and believe it or not, we would fill it with models from the March 3% ois ccviesasewus ve saewxwers to From the picture, we would say It seems there are for drive action only ………. 20.2… cece eee eee 29.50 Streamliner 20,000 us places where there are ideal concitions that no R.P.M. spark. bration-tested. ORS) “put that pond anywhere in the Metro- first of are drive minished away. Knee Here Dooling Meena S.K.F. ball bearing unit For high compression engines, both automotive and marine (Continued from page 41) fill it. design accounts for this amazing performance. “BIG SHOT”’ YACHTING NEWS drive wheels to give about six different gear ratios. A high-compression head the 86.49. to ear—which only an income tax blank are extra astonished engines made today. Moisture- spot and got a run of 34.79 mph. After that, “Mac” had a grin from ear available in kit form, which includes two spur mile, Streamliner’s scientific Standard the Harris (Hank) Dooling has duplicated all the items used in his Dooling Streamlined car when he set a World’s Record of 87.12 miles an hour at Santa Barbara, that ““FIRECRACKER”’ (Continued from page 44) Due to many requests from race car enthusiasts, the Dooling Bros., Los Angeles, now have available for the market a special SPEEDKIT that should enable the average race fan to obtain speeds comparative to the champions. 1941. half The MODEL SPEED BOATS NEW RACE “SPEEDKIT” March 2, smoothie season. DOOLINGS INTRODUCE California, for 9830 METROPOLITAN CLUB STARTS 1941 SEASON search the The wide interest For any information, write te Charles E. Thetford, 50 South Orange Ave., South Orange, N. J. ERE’S model world with the all time high of 87.37 m.p.h. Also hold the new world record A string of freights in HO represented the smaller gauge railroaders, and it was in railroading in the club seems to war- Special Flywheel was a gas model airplane by the same modeler. advises that the club has already started running for the season in Jersey, and a invited to attend. Inc. AipflOw | OE | | ES | | | | S| | |S entire night in a garage on the corner of Fifteenth Street and Springfield Ave., Newark, N. J. The public is cordially —CuHar_Les E, THETFORD eS the was covered in the exhibit, the mechani- pub- The N.J.M.R.C.A. is, we believe, one of the largest clubs of its kind in the Record, 87.12 m.p.h. illus- and its various branches mustered an exhibition that surpassed many commercial track Thetford, well trated in the complete hobby show of the City Bank Club of the National City Bank of New York. This institution extremely well done. At a previous meeting, the club elected a new set of officers: Harry Chase, president; Fred Biancone, vice presi- NE | WE | EW | SS |S | | SE | SS| | | LS |S LS 8 LL standing recently Ural than fifty of was annual was HL and first kind ni (ey 28, its every m1 April held Holder of the World’s Speed THE advancing interest in hobbies of nat The New Jersey Model Race Car As- sociation The DOOLING STREAMLINER tana NEW JERSEY ASSOCIATION HAS FIRST ANNUAL D|NNER N. Y. BANK EMPLOYES HOLD MODEL SHOW ‘ul N suffer the slightest damage because the cork is too soft. With a little care in carving the cork to fit the piston interior, your engine will have many extra revs that will make the other boys sit up and take notice! without Terminals With divi- lead, Ignition Leaflet on request NATHAN R, SMITH MFG, CO. MANUFACTURING ELECTRICAL ENGINEERS 105 PASADENA AVE. $O. PASADENA 5 cs so oo 2 oratareverererreroiois $3.00 CALIF. one takes advantage of. In the North we are constantly trying to improve our sailing conditions, and in some places there are natural ponds, not designed with the sport in mind, and not being used. This, to the true model yachts- man, is the same as having a good roadbed for a railroad and not running any trains would be to the model rail- vent weeds or other matter catching in FASTEST the crack which usually appears at this point, where removable lead-ballast is STOCK ENGINE used. Glue on a flat piece of wood along bottom of center piece of backbone BEFORE shaping, and cut off to desired shape when dry. The lead will then require the tip cut off to butt fair against the stopwater. roader. ) Washington Invitation, Sunday, April 13 Ten entries competed. erratic. Weather SKIPPER Wind 2-4 mph. warm. BOAT Scores CLUB were POINTS Joe Guy Naughty Girl South Jersey Al. Link Almary Quaker City A. W. Greely V,B,&G Washington O. B. Perkins XPDNC Baltimore J.J. Patrick Hell-Cat F. E. Snow — Slipshod J. T. Edwards Ida F. Bonner 35 32 29 23 Washington South Jersey Washington 22 21 21 Hell-Cat-Too Washington F. Mood Iva 12 South Jersey A.J. Harwood Whistle CHAMPION el. METHOD OF FASTENING Washington BACKBONE AND Remember that It is urged by the OOD that all clubs realize their obligation to the host club of any regatta, and that as a matter of courtesy they notify the host club of the number and names of their entries. Then the regatta may start early and sail as many races as possible, for the greater enjoyment of on-lookers. the skippers $14 how he selected the name of 1104 t our model the “Bloody Bucca neer.” We soon found the name too long, so we shortened it to B.B. This did not sound right, so we added a couple of Es, and the result was BEBE. We are now finishing the eighth BEBE, and we will change the name after tenth. we reach BACK the to the backbone. already been The rudder-tube will small drill at first, and gradually work up to the right size. If a full-size drill is used at first, it is apt to run off to one side and spoil-the fit. A rat-tail file can also be used to finish to final tight-fi t. The lower part of the rudder-tube, filed off to fit after part of skeg, may be fastened to the Bakelite by drillin g smal! holes and using brass drift pins. 7. STOPWATER (Fig. 18) A stopwater at the joint where the backbone and keel appendage merge to feather edge at the forward end is desirable, although not absolu tely necessary. However, the stopwater will pre- give than Will you You 70 cal mor PRODUCTS CO. ARCHITECTS BLDG., LOS ANGELES, CAL. Delivery! REGPINK CYLINDER HEAD for Super-Cyclone Engines BOARD A Scientifically Designed Head of special aluminum alloy greatly increased compression ratio maximum gas turbulence – diagonal finning to secure the greatest scrubbing action from the air stream, Sand to desired shape, or taper, on a fast-spinning sand wheel. Glue the rubber on to a piece of flat wood, about XK inch thick. Small clamps are used to Use After sanded water-proof glue is to a nearly set, ORDER YOURS NOW—$2.75 Including clamps will have room to glue, MAXIMUM Specially fitted POWER—EASY STARTING COOL RUNNING Prepared with High for Model Racing Compression Cars Engines. WHY BE STUMPED? backbone, and which give the shape to the hull by serving as members to which Did you know that hundreds of fans have written to us for advice on their layouts inwales, deck-beams, etc., are fastened. The shape of each frame is taken from the body-plan of the and signalling problems WHY WAIT—Write us today—we will be glad to assist you without obligations. yacht, Basswood is the best material for frames, although pine or other light, STAPLES 1007 PENN AVE. close-grained wood may be used. Basswood is cut easily in practically any direction of the grain, does not split, and is tough and strong. Thickness of frames depends on size MFG. CO. WILKINSBURG, PA, METALS ALL KINDS, SHAPES AND SIZES of boat, and preferences of the builder. Some use %” and others 3/16”. The Many write us our catalog solves their problems for the hard to get materials. And in addition, railway supplies from QO gauge to 114” scale, steam engines, in and Crarrsman for Tune, 1941 in- REGGIE PINK, Ine. @ esr Yor city Frames are the transverse members of the yacht, which are fastened to the When writing to advertisers please mention Mover. and SPECIAL FULL QUART—75c (Shipment by Express Only) function. former is recommended for the M-Class smaller yachts, while the 3/16” is usually more suitable for larger classes. data JeAeP RACING FUEL the finished (See Figs. 7 to 16) planking, tuning @ 9. FRAMES the complete structions. piece BEFORE the planking is started, have to lay snug against the after part of the skeg, so a hole should now be bored to take the rudder-tube. Use a better Champion. Send this ad and $14 NOW. Your new Champion will be shipped to you prepaid the same day. BUILDING shape, and in turn, glued onto the stem- fastened doing engine If a built-in bumper is desired, a section of rubber taken from an old wringing machine makes the best material. bumper is 6. RUDDER-TUBE stock 8. BUILT-IN BUMPER (See Fig. 20) so The skeg has \ engine ® pressure. mixed thick. (Continued from page 41) other a FRAME give YACHT CONSTRUCTION a OF on with Immediate J FIG. 16 his model, we would be glad to print it. In our own case, we originally named count m.p-h, CHAMPION ticular race, but all the models that are sailed. It would be interesting reading . If anyone wishes to inform us where or can PRE- We were wondering as we wrote the above how the names were selected for the boats. We do not mean in this par- factory ever stock jobs are being raced. PAID and ANY you buy is a STOCK engine—so why not buy the one that is admittedly the FASTEST. Champion can_ give you MORE stock r.p.ms. and MORE power and are proving this undisputed fact every day from Coast to Coast wher- FRAME our tractor, gas engines, pumps, etc., are listed big 84 page illustrated Catalog, price 35¢ CHAS, A. | VENTURA COLE, DEPT. M.c. CALIF. | 59 7 TUITCTMaAtCry, vOotTiT TITICATIUCSSUS iitda ve and Apply second Coat Of ad- Straight. Lay out two short pieces of wood to form a rough V. (Fig. 7.) The angles hesive to first half of frame, and brad to board, using four small brads. NOTE: Leave heads of brads in this case and in all other cases, slightly high, so they can be withdrawn without dam- of aging the wood. used, the smaller frames and the 3/16” for the larger near the center of the boat. frames the TM%” V for will the vary shape of each according frame. te the Width of stock also varies, but averages from 3” to 4”. Use the frame-patterns to ascertain the angles. Arrange joints in such a way that the grain of the wood runs straight in the way frame. of The cross-grain the upper lower is part, bound to portion where occur, of some will be amply strengthened later by the adélition of a floor, which runs athwartships. ee taking hold soil —ina BIG WAY!” 2 half of frame, press joints together, using guide-line to line up properly, and quickly brad to board, toeing | in breathes power Setting the pace to new track speeds! “O.K.” TORNADO is taking hold—BIC! brads slightly, to force joints together. Deep cooling fins; 1 pc. Cylinder; Large Exhaust Stac«, Large Venturi; Accessible ; Be sure the brads do not cause any part of the frame to bulge—check by lightly tapping all around with a small wood- Timing Unit, Spark Control adjustable to 3 positions. No flywheel wob- block and hammer, so the frame will adjustment ENGINES” New, trated illus- book with diagrams, seeking stantly ae BONE =/ R&L. HAND “EASY STARTING (Continued from page 60) & BACK- Foal = le “aM BRASS \) $24 R. E. OLSEN PLANT FASTENING eer \ FIG. 20 SH2E SKEW-CHISELS Condenser & ALTERNATE [-W VF 19 BUILT-IN BUMPER FOR PLUMP~STEM improvements both in the structure and performance of the car, and these changes are always made as soon as it’s possible to break into the production schedules. The Olsen organization, as a matter of for 3c stamp. HERKIMER, Tool & Model Works (Dept. MC-6) Herkimer, N. Y. NOW ONLY | $4.95 fact, is typical of the up-and-coming miniature race car and engine factories now The Inter-City Model Club, a local AMA chapter, will hold its second annual gas and rubber powered meet from a single piece of wood. Cut stock Only a Screwdriver parts finished. Needed, Average assembly time 30 min. Send only $!. Shipped Coll. to proper angle and check with pattern. Draw a piece of angles short, straight wood to the joint to when gluing up. line the from other to at show one Huron, literature MOTORS—Kept. at joint does not any place in that sure the joint edges are squared so the adhesive will do its work. A sandwheel is very handy for this work, otherwise a block-plane may be used. Obtain a flat board, or boards, at least as wide as the largest fram2, for keeping both parts of frame flat, when fastening together. has no hollows Be sure this board or humps, or your frames will be warped out of true. Place wax-paper strips on board so that the adhesive face after of will not board setting. stick and the fail This to frames come paper to away can _ be scraped and sanded off frame easily. If using Ambroid or celluloid cement, first give edges of joints one light coat and let dry before applying One coat alone is NOT a second. sufficient, but two will give an extremely strong joint, provided the surfaces joined are square catalog. Yorx Styles for homes, schools, factories, per churches, etc. 4 or 5 Windows sheet, 2c. At your dealer or send 25c information, write: Ed1708 Eighth St. Port (coin) for sample dozen, illustrated and hints on using. circular, Michigan. o.- ROCKFORD TRACK Walter E. Bath YOUR FAVORITE PHOTO A 5 x 7 enlargement of any picture in this issue of Model Craftsman is yours for only 25c. (Continued from page 30) have Be New Jumbo Eastern Dist., Polk’s Model Craft Hobbies, N. Y. C. (Fig. 7.) vicinity. for St., for Create your own buildin:gs according to your own imagination or plans. _ This is a new MC service to meet the growing demand among organizations and indlviduals for pictures of models and club groups. Special prices on quantities and larger pictures. Price to you covers only our cost of production and handling. to come on the center-line, but may be almost Send 21 MODEL WINDOWS AND DOORS position necessarily FREE day. 6c E. 54 Clinton St. tion numbers on each part to avoid error The or K-40 – 3 ply Bristol – 18 styles HO Gauge right Also mark frame-sta- in gluing up the wrong pairs. same C.0.D. GHQ rain, the meet will be called off until the following Sunday. For further ward Bryan, etc. F or All plug, simple instructions, coil, 1/5 H.P. All parts guaranteed, boats, planes, midget cars, etc. Ravenswood and Range Roads, Port Huron, Michigan, June 15. In case of frames may be cut REAL ENGINE VALUE The G.H.Q. is a miniature gasoline engine that really operates. Over 15 Now is 000 sold in the last year. your chance to buy the New Improved kit for $4.95. Absolutely complete with operating along the West Coast, and the Interceptor car has proved itself. PORT HURON, MICH., MEET The very smallest or Stroke .900, Bore .064. Displ. .950, coil Complete with = EN & = SN 3 FIG. point cleaning! frames. back of Fig.17 © eee EY = 25h : CAM covered DESICN, 2000 laps without adhesive is set, remove brads, and scrape — nN ac VIEW [- Sand Casting—Forging—Heat Treating — Case Hardening Make your own castings of aluminum, copper, bronze, silver. Foundry sets are available in three sizes including 2400 Deg. F. blast Furnaces. $13.50, $19.00, $27.50, f.o.b. Kansas City, Free Circular. P.O. KANSAS CITY SPECIALTIES CO. Box 6022, Dept. CARVED HULL all our track activities. to show the boys in our on page 65) When writing to advertisers pleas? mention Mopet CrarrsMAN for June, 1941 Mo. KITS Spinnakers, Send 1941 section some real speed, and we do have (Continued City, Separate Fittings, Model Yacht Fittings, Sails and We expect a track worth bragging about. Kansas MC-1I1 A. J, FISHER 20c, Blueprints coin, illustrated 1002-3 Royal for Etowah Oak, new catalog. Ave., Mich. 61