U DB Mathews l~ Z~cziuz S C Another Oxymoron March 1997 column took off frequently used nonsensical terms Im adding spray can epoxy list Hopefully February 1998 column explained such product must figment ad writers runaway imagination Once separate components catalyzed compound mixed together irreversible chemical reaction started ending cured state regardless container presence atmosphere Therefore premixed epoxy paintby definitioncannot stored aerosol can two-part epoxy adhesives can sold premixed Premixed epoxy spray can chemical impossibilityor Custom Spray Cans convenience aerosol spray can paints obvious limited paints set evaporation modeling commonly used spray paints lacquers dopes noncatalyzed polyurethanes Both fine have used successfully years modelers However have several problems Dope handicapped its thinness low pigmentation requiring multiple coats uncatalyzed polyurethanes techniquesensitive heavy because thickness coats Consequently want spray paint Radio Control models cowl and/or wheel pants finish aircraft covered heat-shrink materials forced buy beg borrow steal compressor/airbrush rigor often choose covering match colors available spray cans odd set circumstances stumbled onto device provides modeler method spraying catalyzed finishes equivalent spray can Mike Hammel told finished cowl pants big Extra acrylic enamel auto paint months presumed airbrush day asked him what brand sprayer compressor he told used aerosol system purchased automobile paint store talking about place specializes automobile finishesnot usual paint department WalMartTM Look yellow pages under Automobile Body Shop Equipment Supplies Needing 3MTM 471 masking tape inquired auto paint store shown Preval Sprayer system Imagine surprise upon learning 76 Model Aviation ested equipment mixing catalyzed finishes includes mixing sticks plastic syringes etc Details text Preval sprayer available auto paint stores reusable bottle Fiberglass wheel pant sprayed Ultrapoxy complete system $440 theres number set again propellant refill $353 Mike said triplecoated huge cowl pants aerosol left over price sounded right gadget didnt work price would have way too high Im delighted report works well spray canand catalyzed paint boot spray pick-up tube nozzle bottle can cleaned appropriate thinner therefore reusable container propellant seems well exceed coverage conventional spray can helping keep application costs comparable modeler willing paint model spray cans Preval system could considered dont think its new product know may already hobby shop shelves trip auto paint store inconvenient manufacturer Precision Valve Corporation Box 309 Yonkers NY 10702 Preval Sprayer manufactured US Although bottle graduated marked accurate measuring device such disposable clear mixing cups available hobby shops preferred photo shows tongue depressors used disposable mixing sticks stir up contents before dispensing combine two parts Cheap plastic syringes sold dental supply houses used draw liquid cans An alternative decanting accurately CyA applicators part CAAP-8 100 Dave Brown Products have never able accurately pour measured quantities can paraphernalia may seem overkill K&B releases formulas mixing match UltraKote MonoKote colors will need accurate measurements Furthermore optimum results catalyzed materials require fairly accurate proportions mixed Ultrapoxy jar stirring vigorously practiced spraying piece cardboard Although Ultrapoxy does require thinning airbrushed bit thick suction system such Preval Diluting Superpoxy thinner 110 ratio allowed spray very well discharge rate similar regular spray can less spitting clogging instructions advise holding outlet shut depressing button should clogging occur wonder would work spray cans techniques use will function material used Ultrapoxy should applied thin tack coat followed about 30 minutes thicker color coat After material has cured four hours safe apply third coat nozzle should held 8-10 inches surface depressed before paint hits object released after off other edge Use sweeping motion writing have time try Preval system other finishes cant imagine problems its satisfactory highly recommend really can have epoxy spray can Car Paint Airplanes Its interesting compare evolution automobile finishes hobby uses cars painted multicoat lacquers required monthly waxing polishing prevent fading streaking yet never looked good after few years did car new years lacquers dope available finish light enough modeling use still commonly used lightweight applications such Free Flight models came enamels baked after spraying kept shine much better chipped flaked slightest excuse waxed least three months after application allow complete curing knowledge group virtually no application modeling Acrylic enamels introduced later vast improvement over alkyd enamels still common use materials found spray cans auto departments stores modeling have distinct advantages over lacquers alkyds master builders use finishes superb results theyre bit heavy require some sort overcoat provide fuelproofing catalyzed polyurethanes Imron trademark rage Some exquisite automobile finishes full-scale airplanes done have beautiful depth chroma excellent durability extremely hazardous application group rarely used model aircraft because relatively high cost special equipment required spraying Currently catalyzed acrylic enamels basically standard auto finish being used ever frequently model aircraft finishes either application catalyzed acrylic enamels flow evenly set thin very hard coats hold shine years cure rapidly finish Mike Hammels Extra cowl pants Du PontTM Candor mixed eight parts pigment part gloss hardener thinned reducer optionally plasticizer added improved fuelproofing Pot life working time three four hours sets handling four five hours virtues its use apply models automobiles bonus being computermatchable Auto paint stores have ability place sample color want match spectral analyzer computer-generates mixing formula way body shops blend colors match aged paint cars bent body panels Remember body repairs never quite matched Mike mix MonoKote white dark blue red covered Extra color darn close color matching/mixing service inexpensive results catalyzed acrylic enamels worth cost Reflections Looking last three columns might think Im implying beautifully finished models fun build fly isnt necessarily Some models have given pleasure through years have darn ugly Build something paint interior latex broom carejust long fly fun 4March 1998 77 Mike Hammels Wichita KS Ohio R/C Extra cowl wheel pants sprayed Centari using Preval sprayer
Edition: Model Aviation - 1998/03
Page Numbers: 76, 77
U DB Mathews l~ Z~cziuz S C Another Oxymoron March 1997 column took off frequently used nonsensical terms Im adding spray can epoxy list Hopefully February 1998 column explained such product must figment ad writers runaway imagination Once separate components catalyzed compound mixed together irreversible chemical reaction started ending cured state regardless container presence atmosphere Therefore premixed epoxy paintby definitioncannot stored aerosol can two-part epoxy adhesives can sold premixed Premixed epoxy spray can chemical impossibilityor Custom Spray Cans convenience aerosol spray can paints obvious limited paints set evaporation modeling commonly used spray paints lacquers dopes noncatalyzed polyurethanes Both fine have used successfully years modelers However have several problems Dope handicapped its thinness low pigmentation requiring multiple coats uncatalyzed polyurethanes techniquesensitive heavy because thickness coats Consequently want spray paint Radio Control models cowl and/or wheel pants finish aircraft covered heat-shrink materials forced buy beg borrow steal compressor/airbrush rigor often choose covering match colors available spray cans odd set circumstances stumbled onto device provides modeler method spraying catalyzed finishes equivalent spray can Mike Hammel told finished cowl pants big Extra acrylic enamel auto paint months presumed airbrush day asked him what brand sprayer compressor he told used aerosol system purchased automobile paint store talking about place specializes automobile finishesnot usual paint department WalMartTM Look yellow pages under Automobile Body Shop Equipment Supplies Needing 3MTM 471 masking tape inquired auto paint store shown Preval Sprayer system Imagine surprise upon learning 76 Model Aviation ested equipment mixing catalyzed finishes includes mixing sticks plastic syringes etc Details text Preval sprayer available auto paint stores reusable bottle Fiberglass wheel pant sprayed Ultrapoxy complete system $440 theres number set again propellant refill $353 Mike said triplecoated huge cowl pants aerosol left over price sounded right gadget didnt work price would have way too high Im delighted report works well spray canand catalyzed paint boot spray pick-up tube nozzle bottle can cleaned appropriate thinner therefore reusable container propellant seems well exceed coverage conventional spray can helping keep application costs comparable modeler willing paint model spray cans Preval system could considered dont think its new product know may already hobby shop shelves trip auto paint store inconvenient manufacturer Precision Valve Corporation Box 309 Yonkers NY 10702 Preval Sprayer manufactured US Although bottle graduated marked accurate measuring device such disposable clear mixing cups available hobby shops preferred photo shows tongue depressors used disposable mixing sticks stir up contents before dispensing combine two parts Cheap plastic syringes sold dental supply houses used draw liquid cans An alternative decanting accurately CyA applicators part CAAP-8 100 Dave Brown Products have never able accurately pour measured quantities can paraphernalia may seem overkill K&B releases formulas mixing match UltraKote MonoKote colors will need accurate measurements Furthermore optimum results catalyzed materials require fairly accurate proportions mixed Ultrapoxy jar stirring vigorously practiced spraying piece cardboard Although Ultrapoxy does require thinning airbrushed bit thick suction system such Preval Diluting Superpoxy thinner 110 ratio allowed spray very well discharge rate similar regular spray can less spitting clogging instructions advise holding outlet shut depressing button should clogging occur wonder would work spray cans techniques use will function material used Ultrapoxy should applied thin tack coat followed about 30 minutes thicker color coat After material has cured four hours safe apply third coat nozzle should held 8-10 inches surface depressed before paint hits object released after off other edge Use sweeping motion writing have time try Preval system other finishes cant imagine problems its satisfactory highly recommend really can have epoxy spray can Car Paint Airplanes Its interesting compare evolution automobile finishes hobby uses cars painted multicoat lacquers required monthly waxing polishing prevent fading streaking yet never looked good after few years did car new years lacquers dope available finish light enough modeling use still commonly used lightweight applications such Free Flight models came enamels baked after spraying kept shine much better chipped flaked slightest excuse waxed least three months after application allow complete curing knowledge group virtually no application modeling Acrylic enamels introduced later vast improvement over alkyd enamels still common use materials found spray cans auto departments stores modeling have distinct advantages over lacquers alkyds master builders use finishes superb results theyre bit heavy require some sort overcoat provide fuelproofing catalyzed polyurethanes Imron trademark rage Some exquisite automobile finishes full-scale airplanes done have beautiful depth chroma excellent durability extremely hazardous application group rarely used model aircraft because relatively high cost special equipment required spraying Currently catalyzed acrylic enamels basically standard auto finish being used ever frequently model aircraft finishes either application catalyzed acrylic enamels flow evenly set thin very hard coats hold shine years cure rapidly finish Mike Hammels Extra cowl pants Du PontTM Candor mixed eight parts pigment part gloss hardener thinned reducer optionally plasticizer added improved fuelproofing Pot life working time three four hours sets handling four five hours virtues its use apply models automobiles bonus being computermatchable Auto paint stores have ability place sample color want match spectral analyzer computer-generates mixing formula way body shops blend colors match aged paint cars bent body panels Remember body repairs never quite matched Mike mix MonoKote white dark blue red covered Extra color darn close color matching/mixing service inexpensive results catalyzed acrylic enamels worth cost Reflections Looking last three columns might think Im implying beautifully finished models fun build fly isnt necessarily Some models have given pleasure through years have darn ugly Build something paint interior latex broom carejust long fly fun 4March 1998 77 Mike Hammels Wichita KS Ohio R/C Extra cowl wheel pants sprayed Centari using Preval sprayer