John Hunton Basics Theres hardly model cant benefit good sanding job its second nature experienced modelers newcomers kinds sandpaper various grits can bit perplexing author discusses provides some useful hints have worked him SANDING the act us accused doing too little Perhaps wre known about sanding sandpapers sanding would considered such chore could enjoy fully process shaping smoothing materials use modeling Sanding begins knife die-cutting quits some tricks know make job sanding easier faster should know select proper grit backing prepare product suit needs coarseness grits usually indicated back sandpaper working balsa grits 0 100 considere coarse rough sanding 200 300 final smoothing raw balsa grits finer 300 good smoothing painted finishes type grit adhesive backing deter cost sandpaper consider cost against length time piece sandpaper will stay sharp attached backing aluminum oxidessold Production Paper 3M Co Adalox Norton far away best types sandpaper working balsa Flint papers seem utilize glue performs poorly under humid conditions Garnet papers good aluminum oxide performs best balsa get best utility piece sandpaper must prepared pick up flat piece sandpaper begin sanding away would find fingers would slip across paper grit digs defiantly wood will have noticed perhaps folding sandpaper half grit outside provides good grip fingers can make progress single fold however two halves paper will slip other crease will rapidly fail mining sanding pad better way Fold sandpaper two places three pads Now have grit fingers grip grit between sheets crease will wear form double folded pads run knife along back piece sandpaper dividing half Fold half twice make pads can also buy 4 x 11 sandpaper makes good pads An beter way make pad take full sheet run cut center side fold sheet four ways pad lasts longer accurate shaping single-curved shapes such wings may want use sanding block trick use proper adhesive mount sandpaper wood metal block sandpapers except wet-or-dry types use water-soluble glues use waterbased glues white glues like aliphatic resins will deform sandpaper Use contact cement rubber cement double-faced tape Mots modelers prefer round edges sanding block slightly edge paper sanding block useful getting uniformity wing ribs working flat single-curved surface careful ribs sanding pad prepared according authors tips will perform well compound curvesand will last long time 76 Model Aviation Bernie Steuckers Jemco Mustan~ uuu rnoue uuiuing pracTices R gooa sanding job necessary good finishwhich attractive better aerodynamically 2 . %. single-fold sanding pad wont last very long will dig good commercial sanding blocks available have foam pads usually desirable accuracy standpoint Double-fold pad will last much longer give good service Emery papers have cloth backing papers tend clog quickly balsa usual use holding against rotating workfor example work lathe Sanding techniques must developed individual put down knife start sanding choice depending time have accuracy desire Balsa wood has cellular structure cells unidirectional providing good strength direction grain poorer strength across grain Most sanding should done -z -7 7 7 / / e - / / / sketches show simple steps necessary get triple-folded sanding pad works best can folded bring fresh sandpaper working area idea simple such things can make modeling work easier enjoyable b$1 ~11bLy Illustrated steps preparing accurate sanding block use water-based glue adhere sandpaper will dissolve grits adhesive Take little time round off edges slightly sandpaper wont dig spoil efforts grain although can sometimes cut quickly sanding cross-grain final sanding should done direction motion will tend pick up ends balsa cells After have shaped balsa coat two clear dope will stabilize surface against nicks scratches firm-up grain finish sanding smoothing During heavy sanding operations should use mask prevent lungs getting clogged dust protect allergic reaction sneezing Summary available sandpaper types Flint paper cheapest Does cut particularly well Does last long Poor humid conditions Garnet paper works well balsa hard woods Aluminum oxide papers expensive cut best last longest Best balsa Emery cloth cloth backed Tends clog balsa Best metals because strong backing Crocus cloth cloth backing fine grit polishing metals Wet-or-dry papers can used water prevent clogging papers smoothing painted surfaces use wet wood Can used dry backing brittle September 1982 77
Edition: Model Aviation - 1982/09
Page Numbers: 76, 77
John Hunton Basics Theres hardly model cant benefit good sanding job its second nature experienced modelers newcomers kinds sandpaper various grits can bit perplexing author discusses provides some useful hints have worked him SANDING the act us accused doing too little Perhaps wre known about sanding sandpapers sanding would considered such chore could enjoy fully process shaping smoothing materials use modeling Sanding begins knife die-cutting quits some tricks know make job sanding easier faster should know select proper grit backing prepare product suit needs coarseness grits usually indicated back sandpaper working balsa grits 0 100 considere coarse rough sanding 200 300 final smoothing raw balsa grits finer 300 good smoothing painted finishes type grit adhesive backing deter cost sandpaper consider cost against length time piece sandpaper will stay sharp attached backing aluminum oxidessold Production Paper 3M Co Adalox Norton far away best types sandpaper working balsa Flint papers seem utilize glue performs poorly under humid conditions Garnet papers good aluminum oxide performs best balsa get best utility piece sandpaper must prepared pick up flat piece sandpaper begin sanding away would find fingers would slip across paper grit digs defiantly wood will have noticed perhaps folding sandpaper half grit outside provides good grip fingers can make progress single fold however two halves paper will slip other crease will rapidly fail mining sanding pad better way Fold sandpaper two places three pads Now have grit fingers grip grit between sheets crease will wear form double folded pads run knife along back piece sandpaper dividing half Fold half twice make pads can also buy 4 x 11 sandpaper makes good pads An beter way make pad take full sheet run cut center side fold sheet four ways pad lasts longer accurate shaping single-curved shapes such wings may want use sanding block trick use proper adhesive mount sandpaper wood metal block sandpapers except wet-or-dry types use water-soluble glues use waterbased glues white glues like aliphatic resins will deform sandpaper Use contact cement rubber cement double-faced tape Mots modelers prefer round edges sanding block slightly edge paper sanding block useful getting uniformity wing ribs working flat single-curved surface careful ribs sanding pad prepared according authors tips will perform well compound curvesand will last long time 76 Model Aviation Bernie Steuckers Jemco Mustan~ uuu rnoue uuiuing pracTices R gooa sanding job necessary good finishwhich attractive better aerodynamically 2 . %. single-fold sanding pad wont last very long will dig good commercial sanding blocks available have foam pads usually desirable accuracy standpoint Double-fold pad will last much longer give good service Emery papers have cloth backing papers tend clog quickly balsa usual use holding against rotating workfor example work lathe Sanding techniques must developed individual put down knife start sanding choice depending time have accuracy desire Balsa wood has cellular structure cells unidirectional providing good strength direction grain poorer strength across grain Most sanding should done -z -7 7 7 / / e - / / / sketches show simple steps necessary get triple-folded sanding pad works best can folded bring fresh sandpaper working area idea simple such things can make modeling work easier enjoyable b$1 ~11bLy Illustrated steps preparing accurate sanding block use water-based glue adhere sandpaper will dissolve grits adhesive Take little time round off edges slightly sandpaper wont dig spoil efforts grain although can sometimes cut quickly sanding cross-grain final sanding should done direction motion will tend pick up ends balsa cells After have shaped balsa coat two clear dope will stabilize surface against nicks scratches firm-up grain finish sanding smoothing During heavy sanding operations should use mask prevent lungs getting clogged dust protect allergic reaction sneezing Summary available sandpaper types Flint paper cheapest Does cut particularly well Does last long Poor humid conditions Garnet paper works well balsa hard woods Aluminum oxide papers expensive cut best last longest Best balsa Emery cloth cloth backed Tends clog balsa Best metals because strong backing Crocus cloth cloth backing fine grit polishing metals Wet-or-dry papers can used water prevent clogging papers smoothing painted surfaces use wet wood Can used dry backing brittle September 1982 77