sYzTrLEfl B1LL Silk original high-strength covering material still cher ished modelers have learned few simple techniques producing desired results Following authors tips will almost guarantee success first try U Clarence Haught Left Finished final-sanded structure given coat dope areas silk will touch Use butyrate nitrate dope depending upon type will apply finish coats Thin dope enough allow good brushing action Right initial coat dope will raise balsa fibers create whiskers Remove roughness wiping surface 400-grit sandpaper dont sand usual sensejust smooth surface Add two coats dope sanding & Left Silk difficult cut shears unless very sharp good alternative cut sharp modeling knife single-edge razor blade straightedge Cut silk oversize about 1A around case possible error Right Lay dry silk over surface cov ered Dont worry about creases wrinkles right now will disappear work progresses Avoid snagging silk stage 58 Model Aviation Spray silk mist water household spray bottle damp material will cling structure can smoothed out positioned just want Right Smooth out wrinkles working edges ends structure clinging ac tion will hold silk place spray water needed Try tautness around Take enough time get right Left Wet silk can worked over small compound curves piece wet threads can slip over other accommodate larger compound curve may require silk cut several small sections Right Still damp sopping wet silk adhered brushing mix 25% dope/75% thinner through silk mixture softens previously-applied dope bonds silk structure Left An alternative working dope through silk lift edges apply dope structure smoothing silk back place silk too wet may cause dope turn milky white blush remedy work thinner blushed dope Right Wait dope dry before trimming excess silk Method shown sand through silk sharp edge 220-grit paper applying tension scrap end Note silk wrapped around trailing edge giving silk covering edges April 1984 59 Left An alternate method trimming excess silk time-honored razor blade takes light touch careful Cut balsa weaken structure Keep overlaps minimum avoid dark-colored lines colored silk clear finish Right Initial coat dope applied disposable foam brush Flaw dope single stroke leaving film surface Avoid very thin dope Left Sheeted surfaces covered same way open structures Compound curves will require using single piece Sterling Corsair fuselage covered two pieces silkshown rough-cut dry Right Spray just enough water silk cling structure necessary spray water silk gets too wet drying can speeded flood lamp hair dryer Left Work out wrinkles silk will lay place wrinkling will okay use smaller pieces Keep overlaps very nar row ideally butted Right Adhere silk brushing very thin dope through previously-doped balsa will serve first coat dope silk should damp really wet stage blushing should occur work area thinner Left The Corsair has completely silked five coats clear dope have applied Keep doping until silk has well sealed inadequate sealing will allow oil seepage under finish unsightly pinholes will show colored dope Right simplest silk cover ing jobs rectangular fuselage Old-Timer top covering overlaps sides slightly avoid exposed wood corners 60 Model Aviation Left Avoid starved horse look visible fuselage bottom scalloping formers between stringers use stringers Right Undercambered wings require special attention assure good adhesion rib bottoms Extra pre-doping bottom rib edge helps Lifting damp silk applying dope directly ribs frequently-used technique case cover bottom first lay coat single pass thus working dope through silk allowing form blisters back side Dont worryenough dope will penetrate silk gain sufficient bond After initial coat may return conventional bristle brush subsequent coats Trim details numbers can cut colored Japanese tissue applied during finishing procedure trimming method especially nice Free Flight models Sandwich tissue between tracing paper ease cutting scissors straightedge modeling knife Lay trim piece place brush thinner through adhesion should done after second coat clear dope Final coats will make trim seem part silk covering Some troubles may encounter blisters pinholes blushing wrin kles pull out Blisters best avoided careful doping known cure cut away affected area install patch Wrin kles may treated applications thinner soften dope giving another chance draw fabric tight doesnt always trick Again cutting out affected area redoing patching may best solution Try locate patches between supporting structure ribs spars stringers etc Patches open bays usually quite noticeable Blushing dope recognized its milky appearance caused too much moisture combined fast-drying dope occurs can usually eliminated work ing extra thinner surface heavy application dope next coat Blush retardant lacquer thinner available automotive paint stores will work well aircraft dopes both nitrate butyrate can doping low-humidity day Pinholes appear just name implies cause insufficient dope seal weave fabric sometimes difficult spot clear-doped finish pinholes become very visible colored dope applied Additional dope onb remedy minor disadvantages hardly worth mentioning comparisor good features silk cover Study photographs give After traditional high-stn model covering April 1984 Left Pushrod exit holes must supported structure shown Unsupported edges silk weak very unslightly Right Trim identification numbers may painted colored dope desired lighter way especially good FF Old-Timers cut design colored tissue affix brushing thinner through tissue Ordinarily done between second third coats clear dope Bob Petro gets ready fire up beautiful silk-covered Zipper FF Old-Timer Its basiceiiy yellow silk finished clear nitrate dope Trim orange epoxy paint pinstriping vinyl tape covering/finish attractive lightweight long-lived
Edition: Model Aviation - 1984/04
Page Numbers: 58, 59, 60, 61
Edition: Model Aviation - 1984/04
Page Numbers: 58, 59, 60, 61
sYzTrLEfl B1LL Silk original high-strength covering material still cher ished modelers have learned few simple techniques producing desired results Following authors tips will almost guarantee success first try U Clarence Haught Left Finished final-sanded structure given coat dope areas silk will touch Use butyrate nitrate dope depending upon type will apply finish coats Thin dope enough allow good brushing action Right initial coat dope will raise balsa fibers create whiskers Remove roughness wiping surface 400-grit sandpaper dont sand usual sensejust smooth surface Add two coats dope sanding & Left Silk difficult cut shears unless very sharp good alternative cut sharp modeling knife single-edge razor blade straightedge Cut silk oversize about 1A around case possible error Right Lay dry silk over surface cov ered Dont worry about creases wrinkles right now will disappear work progresses Avoid snagging silk stage 58 Model Aviation Spray silk mist water household spray bottle damp material will cling structure can smoothed out positioned just want Right Smooth out wrinkles working edges ends structure clinging ac tion will hold silk place spray water needed Try tautness around Take enough time get right Left Wet silk can worked over small compound curves piece wet threads can slip over other accommodate larger compound curve may require silk cut several small sections Right Still damp sopping wet silk adhered brushing mix 25% dope/75% thinner through silk mixture softens previously-applied dope bonds silk structure Left An alternative working dope through silk lift edges apply dope structure smoothing silk back place silk too wet may cause dope turn milky white blush remedy work thinner blushed dope Right Wait dope dry before trimming excess silk Method shown sand through silk sharp edge 220-grit paper applying tension scrap end Note silk wrapped around trailing edge giving silk covering edges April 1984 59 Left An alternate method trimming excess silk time-honored razor blade takes light touch careful Cut balsa weaken structure Keep overlaps minimum avoid dark-colored lines colored silk clear finish Right Initial coat dope applied disposable foam brush Flaw dope single stroke leaving film surface Avoid very thin dope Left Sheeted surfaces covered same way open structures Compound curves will require using single piece Sterling Corsair fuselage covered two pieces silkshown rough-cut dry Right Spray just enough water silk cling structure necessary spray water silk gets too wet drying can speeded flood lamp hair dryer Left Work out wrinkles silk will lay place wrinkling will okay use smaller pieces Keep overlaps very nar row ideally butted Right Adhere silk brushing very thin dope through previously-doped balsa will serve first coat dope silk should damp really wet stage blushing should occur work area thinner Left The Corsair has completely silked five coats clear dope have applied Keep doping until silk has well sealed inadequate sealing will allow oil seepage under finish unsightly pinholes will show colored dope Right simplest silk cover ing jobs rectangular fuselage Old-Timer top covering overlaps sides slightly avoid exposed wood corners 60 Model Aviation Left Avoid starved horse look visible fuselage bottom scalloping formers between stringers use stringers Right Undercambered wings require special attention assure good adhesion rib bottoms Extra pre-doping bottom rib edge helps Lifting damp silk applying dope directly ribs frequently-used technique case cover bottom first lay coat single pass thus working dope through silk allowing form blisters back side Dont worryenough dope will penetrate silk gain sufficient bond After initial coat may return conventional bristle brush subsequent coats Trim details numbers can cut colored Japanese tissue applied during finishing procedure trimming method especially nice Free Flight models Sandwich tissue between tracing paper ease cutting scissors straightedge modeling knife Lay trim piece place brush thinner through adhesion should done after second coat clear dope Final coats will make trim seem part silk covering Some troubles may encounter blisters pinholes blushing wrin kles pull out Blisters best avoided careful doping known cure cut away affected area install patch Wrin kles may treated applications thinner soften dope giving another chance draw fabric tight doesnt always trick Again cutting out affected area redoing patching may best solution Try locate patches between supporting structure ribs spars stringers etc Patches open bays usually quite noticeable Blushing dope recognized its milky appearance caused too much moisture combined fast-drying dope occurs can usually eliminated work ing extra thinner surface heavy application dope next coat Blush retardant lacquer thinner available automotive paint stores will work well aircraft dopes both nitrate butyrate can doping low-humidity day Pinholes appear just name implies cause insufficient dope seal weave fabric sometimes difficult spot clear-doped finish pinholes become very visible colored dope applied Additional dope onb remedy minor disadvantages hardly worth mentioning comparisor good features silk cover Study photographs give After traditional high-stn model covering April 1984 Left Pushrod exit holes must supported structure shown Unsupported edges silk weak very unslightly Right Trim identification numbers may painted colored dope desired lighter way especially good FF Old-Timers cut design colored tissue affix brushing thinner through tissue Ordinarily done between second third coats clear dope Bob Petro gets ready fire up beautiful silk-covered Zipper FF Old-Timer Its basiceiiy yellow silk finished clear nitrate dope Trim orange epoxy paint pinstriping vinyl tape covering/finish attractive lightweight long-lived
Edition: Model Aviation - 1984/04
Page Numbers: 58, 59, 60, 61
sYzTrLEfl B1LL Silk original high-strength covering material still cher ished modelers have learned few simple techniques producing desired results Following authors tips will almost guarantee success first try U Clarence Haught Left Finished final-sanded structure given coat dope areas silk will touch Use butyrate nitrate dope depending upon type will apply finish coats Thin dope enough allow good brushing action Right initial coat dope will raise balsa fibers create whiskers Remove roughness wiping surface 400-grit sandpaper dont sand usual sensejust smooth surface Add two coats dope sanding & Left Silk difficult cut shears unless very sharp good alternative cut sharp modeling knife single-edge razor blade straightedge Cut silk oversize about 1A around case possible error Right Lay dry silk over surface cov ered Dont worry about creases wrinkles right now will disappear work progresses Avoid snagging silk stage 58 Model Aviation Spray silk mist water household spray bottle damp material will cling structure can smoothed out positioned just want Right Smooth out wrinkles working edges ends structure clinging ac tion will hold silk place spray water needed Try tautness around Take enough time get right Left Wet silk can worked over small compound curves piece wet threads can slip over other accommodate larger compound curve may require silk cut several small sections Right Still damp sopping wet silk adhered brushing mix 25% dope/75% thinner through silk mixture softens previously-applied dope bonds silk structure Left An alternative working dope through silk lift edges apply dope structure smoothing silk back place silk too wet may cause dope turn milky white blush remedy work thinner blushed dope Right Wait dope dry before trimming excess silk Method shown sand through silk sharp edge 220-grit paper applying tension scrap end Note silk wrapped around trailing edge giving silk covering edges April 1984 59 Left An alternate method trimming excess silk time-honored razor blade takes light touch careful Cut balsa weaken structure Keep overlaps minimum avoid dark-colored lines colored silk clear finish Right Initial coat dope applied disposable foam brush Flaw dope single stroke leaving film surface Avoid very thin dope Left Sheeted surfaces covered same way open structures Compound curves will require using single piece Sterling Corsair fuselage covered two pieces silkshown rough-cut dry Right Spray just enough water silk cling structure necessary spray water silk gets too wet drying can speeded flood lamp hair dryer Left Work out wrinkles silk will lay place wrinkling will okay use smaller pieces Keep overlaps very nar row ideally butted Right Adhere silk brushing very thin dope through previously-doped balsa will serve first coat dope silk should damp really wet stage blushing should occur work area thinner Left The Corsair has completely silked five coats clear dope have applied Keep doping until silk has well sealed inadequate sealing will allow oil seepage under finish unsightly pinholes will show colored dope Right simplest silk cover ing jobs rectangular fuselage Old-Timer top covering overlaps sides slightly avoid exposed wood corners 60 Model Aviation Left Avoid starved horse look visible fuselage bottom scalloping formers between stringers use stringers Right Undercambered wings require special attention assure good adhesion rib bottoms Extra pre-doping bottom rib edge helps Lifting damp silk applying dope directly ribs frequently-used technique case cover bottom first lay coat single pass thus working dope through silk allowing form blisters back side Dont worryenough dope will penetrate silk gain sufficient bond After initial coat may return conventional bristle brush subsequent coats Trim details numbers can cut colored Japanese tissue applied during finishing procedure trimming method especially nice Free Flight models Sandwich tissue between tracing paper ease cutting scissors straightedge modeling knife Lay trim piece place brush thinner through adhesion should done after second coat clear dope Final coats will make trim seem part silk covering Some troubles may encounter blisters pinholes blushing wrin kles pull out Blisters best avoided careful doping known cure cut away affected area install patch Wrin kles may treated applications thinner soften dope giving another chance draw fabric tight doesnt always trick Again cutting out affected area redoing patching may best solution Try locate patches between supporting structure ribs spars stringers etc Patches open bays usually quite noticeable Blushing dope recognized its milky appearance caused too much moisture combined fast-drying dope occurs can usually eliminated work ing extra thinner surface heavy application dope next coat Blush retardant lacquer thinner available automotive paint stores will work well aircraft dopes both nitrate butyrate can doping low-humidity day Pinholes appear just name implies cause insufficient dope seal weave fabric sometimes difficult spot clear-doped finish pinholes become very visible colored dope applied Additional dope onb remedy minor disadvantages hardly worth mentioning comparisor good features silk cover Study photographs give After traditional high-stn model covering April 1984 Left Pushrod exit holes must supported structure shown Unsupported edges silk weak very unslightly Right Trim identification numbers may painted colored dope desired lighter way especially good FF Old-Timers cut design colored tissue affix brushing thinner through tissue Ordinarily done between second third coats clear dope Bob Petro gets ready fire up beautiful silk-covered Zipper FF Old-Timer Its basiceiiy yellow silk finished clear nitrate dope Trim orange epoxy paint pinstriping vinyl tape covering/finish attractive lightweight long-lived
Edition: Model Aviation - 1984/04
Page Numbers: 58, 59, 60, 61
sYzTrLEfl B1LL Silk original high-strength covering material still cher ished modelers have learned few simple techniques producing desired results Following authors tips will almost guarantee success first try U Clarence Haught Left Finished final-sanded structure given coat dope areas silk will touch Use butyrate nitrate dope depending upon type will apply finish coats Thin dope enough allow good brushing action Right initial coat dope will raise balsa fibers create whiskers Remove roughness wiping surface 400-grit sandpaper dont sand usual sensejust smooth surface Add two coats dope sanding & Left Silk difficult cut shears unless very sharp good alternative cut sharp modeling knife single-edge razor blade straightedge Cut silk oversize about 1A around case possible error Right Lay dry silk over surface cov ered Dont worry about creases wrinkles right now will disappear work progresses Avoid snagging silk stage 58 Model Aviation Spray silk mist water household spray bottle damp material will cling structure can smoothed out positioned just want Right Smooth out wrinkles working edges ends structure clinging ac tion will hold silk place spray water needed Try tautness around Take enough time get right Left Wet silk can worked over small compound curves piece wet threads can slip over other accommodate larger compound curve may require silk cut several small sections Right Still damp sopping wet silk adhered brushing mix 25% dope/75% thinner through silk mixture softens previously-applied dope bonds silk structure Left An alternative working dope through silk lift edges apply dope structure smoothing silk back place silk too wet may cause dope turn milky white blush remedy work thinner blushed dope Right Wait dope dry before trimming excess silk Method shown sand through silk sharp edge 220-grit paper applying tension scrap end Note silk wrapped around trailing edge giving silk covering edges April 1984 59 Left An alternate method trimming excess silk time-honored razor blade takes light touch careful Cut balsa weaken structure Keep overlaps minimum avoid dark-colored lines colored silk clear finish Right Initial coat dope applied disposable foam brush Flaw dope single stroke leaving film surface Avoid very thin dope Left Sheeted surfaces covered same way open structures Compound curves will require using single piece Sterling Corsair fuselage covered two pieces silkshown rough-cut dry Right Spray just enough water silk cling structure necessary spray water silk gets too wet drying can speeded flood lamp hair dryer Left Work out wrinkles silk will lay place wrinkling will okay use smaller pieces Keep overlaps very nar row ideally butted Right Adhere silk brushing very thin dope through previously-doped balsa will serve first coat dope silk should damp really wet stage blushing should occur work area thinner Left The Corsair has completely silked five coats clear dope have applied Keep doping until silk has well sealed inadequate sealing will allow oil seepage under finish unsightly pinholes will show colored dope Right simplest silk cover ing jobs rectangular fuselage Old-Timer top covering overlaps sides slightly avoid exposed wood corners 60 Model Aviation Left Avoid starved horse look visible fuselage bottom scalloping formers between stringers use stringers Right Undercambered wings require special attention assure good adhesion rib bottoms Extra pre-doping bottom rib edge helps Lifting damp silk applying dope directly ribs frequently-used technique case cover bottom first lay coat single pass thus working dope through silk allowing form blisters back side Dont worryenough dope will penetrate silk gain sufficient bond After initial coat may return conventional bristle brush subsequent coats Trim details numbers can cut colored Japanese tissue applied during finishing procedure trimming method especially nice Free Flight models Sandwich tissue between tracing paper ease cutting scissors straightedge modeling knife Lay trim piece place brush thinner through adhesion should done after second coat clear dope Final coats will make trim seem part silk covering Some troubles may encounter blisters pinholes blushing wrin kles pull out Blisters best avoided careful doping known cure cut away affected area install patch Wrin kles may treated applications thinner soften dope giving another chance draw fabric tight doesnt always trick Again cutting out affected area redoing patching may best solution Try locate patches between supporting structure ribs spars stringers etc Patches open bays usually quite noticeable Blushing dope recognized its milky appearance caused too much moisture combined fast-drying dope occurs can usually eliminated work ing extra thinner surface heavy application dope next coat Blush retardant lacquer thinner available automotive paint stores will work well aircraft dopes both nitrate butyrate can doping low-humidity day Pinholes appear just name implies cause insufficient dope seal weave fabric sometimes difficult spot clear-doped finish pinholes become very visible colored dope applied Additional dope onb remedy minor disadvantages hardly worth mentioning comparisor good features silk cover Study photographs give After traditional high-stn model covering April 1984 Left Pushrod exit holes must supported structure shown Unsupported edges silk weak very unslightly Right Trim identification numbers may painted colored dope desired lighter way especially good FF Old-Timers cut design colored tissue affix brushing thinner through tissue Ordinarily done between second third coats clear dope Bob Petro gets ready fire up beautiful silk-covered Zipper FF Old-Timer Its basiceiiy yellow silk finished clear nitrate dope Trim orange epoxy paint pinstriping vinyl tape covering/finish attractive lightweight long-lived
