WOULD believe practical man alone cut good foam cores con sistently can easily done MAMan Alone Cutter time time techniques have made known permit man cut foam cores techniques involve fairly complicated difficult construct machinery job well ap plicable shapes configurations Until now simple one-man tech niques limited simple configura tions some producing poor quality cut cores new technique simple make set up operate Also it applicable Man Alone Foam lines cutting wire Mark position screw hooks pivot board wings taper both hooks will placed equal distance hinge line 20 tapered wings mark posi tion screw hook root end 20 above hinge line tip end place screw hook mark closer 20 above hinge line make cutting wire move quickly over tip tem plate slowly over root tem plate Use #6 finish nails stop cut ting wire after passes through foam hammered table top about edge foam accurately establish screw hook last sensible one-man technique produce poor quality Cuttercores U Bill Evans limited simpleconfigurations 114 Squsre Drapery pulleys l/4 Plywood / Gate hinges 1x4 Pine bridge LIST l/4Plywood 2x4Uprlghts 8 Feet MAN-ALONE FOAM CUTTER Designed Bill Evans........ l/2 Plywood MATERIAL 136 x 24 x 3/4 ply 136x20x 1/2 ply 22 x4x 30 fir 2pcs scrap ply stand support 1piece 10 braided cable U-Control line 22 butt hinges 23/4 dia window shade pulleys 4small screw eyes ALL COMMERCIAL RIGHTS RESERVED airfoils wing configurations includ ing taper method described sim plification authors much complicated automatic equipment MA Cutter system includes flat surface hold core blank tem plates piece ood hinged flat surface tension lines attached pull cutting bow across templates couple small pulleys guide tension lines following narrative drawings photos explain build operate MA Cutter Construction Nail foam blank stop 36 X 24 sheet Nail glue ood spreader across 2 X 4s Nail glue 36 X 24 x 2 gs Nail glue stand support 2 X 4 legs Attach ood draw board using 2 butt hinges Set Up Place foam blank position against stop put weights place shown Place foam cutting bow start-cut position number 4 finish nails ham mered table top hold cutting wire rest away foam Attach tension position 1 Measure length cut over root template length cut over tip template 2 Divide tip length root length 3 Multiply result 20 Example If root 10 tip 8 tip8 ot 10 8 20 istance tip ten sion line screw 4 Set screw hook root cut 20 above January 1979 41 hinge line 5 Set screw hook tip cut 16 above hinge line 6 Attach tension lines respective screw hooks 7 With cutting bow ready position tension lines attached bow wire pivot board check set up letting pivot board pull wire over tem plates test wire enter trailing edge exit leading edge does change length ten sion lines desired start point adjust distance screw hook dis tance hinge line increase speed travel increase screw hook distance hinge technique setting tension wire length screw hook position matter experimentation practice easily mastered concerned about using math formula shown above can de leted trial error method moving screw hooks up down until correct travel produced event save foam always check set up running wire over templates fore actually making cut Operating Cutter Attach templates foam blank best results use three number 4 finish nails Set core blank position top cut place weight trailing edge position start wire motion Top cut process Remove foam blank Remove wire start position Turn foam blank over Reverse tension line lo cation draw board necessary tapered wings Set blank position bottom cut place weight trailing edge Position start wire motion Remove finished core Move wire start position above described techniques building operating own Man Alone Cutter will make possible cut near perfect cores much superior two-man cutting methods need source foam Soaring Research 19216 Calvert St Reseda Ca 91335 can supply 1 lb density foam blocks 12 X 6 X 40 $1000 42 Model Aviation finished cutter Set U its first task Its parts works will self evident upon examination drawing End view cutter ready loading bridge carries wire left hinged draw board right Ready cut Large paper clip bent slip over nail located center draw boardprevents falling cut progress cut progress note hot wire almost half way through foam Weight draw board does work Lead weights hold foam Another view cutting wire draw line cable pulley wire atop Strip lightly nailed board aligns block foam post paid CAresidents ad 6% shown January February March 1978 issues ModelAviation recommended see top Cut completed photo Having exited foam hot wire stops against nails three-part article Foam Technioues hold alignment strip cutter also turns out tapered cores accurately Weight hinged draw board pulls heated wire through foam Note cable runs over drapery pulley corner board
Edition: Model Aviation - 1979/01
Page Numbers: 41, 42, 43
WOULD believe practical man alone cut good foam cores con sistently can easily done MAMan Alone Cutter time time techniques have made known permit man cut foam cores techniques involve fairly complicated difficult construct machinery job well ap plicable shapes configurations Until now simple one-man tech niques limited simple configura tions some producing poor quality cut cores new technique simple make set up operate Also it applicable Man Alone Foam lines cutting wire Mark position screw hooks pivot board wings taper both hooks will placed equal distance hinge line 20 tapered wings mark posi tion screw hook root end 20 above hinge line tip end place screw hook mark closer 20 above hinge line make cutting wire move quickly over tip tem plate slowly over root tem plate Use #6 finish nails stop cut ting wire after passes through foam hammered table top about edge foam accurately establish screw hook last sensible one-man technique produce poor quality Cuttercores U Bill Evans limited simpleconfigurations 114 Squsre Drapery pulleys l/4 Plywood / Gate hinges 1x4 Pine bridge LIST l/4Plywood 2x4Uprlghts 8 Feet MAN-ALONE FOAM CUTTER Designed Bill Evans........ l/2 Plywood MATERIAL 136 x 24 x 3/4 ply 136x20x 1/2 ply 22 x4x 30 fir 2pcs scrap ply stand support 1piece 10 braided cable U-Control line 22 butt hinges 23/4 dia window shade pulleys 4small screw eyes ALL COMMERCIAL RIGHTS RESERVED airfoils wing configurations includ ing taper method described sim plification authors much complicated automatic equipment MA Cutter system includes flat surface hold core blank tem plates piece ood hinged flat surface tension lines attached pull cutting bow across templates couple small pulleys guide tension lines following narrative drawings photos explain build operate MA Cutter Construction Nail foam blank stop 36 X 24 sheet Nail glue ood spreader across 2 X 4s Nail glue 36 X 24 x 2 gs Nail glue stand support 2 X 4 legs Attach ood draw board using 2 butt hinges Set Up Place foam blank position against stop put weights place shown Place foam cutting bow start-cut position number 4 finish nails ham mered table top hold cutting wire rest away foam Attach tension position 1 Measure length cut over root template length cut over tip template 2 Divide tip length root length 3 Multiply result 20 Example If root 10 tip 8 tip8 ot 10 8 20 istance tip ten sion line screw 4 Set screw hook root cut 20 above January 1979 41 hinge line 5 Set screw hook tip cut 16 above hinge line 6 Attach tension lines respective screw hooks 7 With cutting bow ready position tension lines attached bow wire pivot board check set up letting pivot board pull wire over tem plates test wire enter trailing edge exit leading edge does change length ten sion lines desired start point adjust distance screw hook dis tance hinge line increase speed travel increase screw hook distance hinge technique setting tension wire length screw hook position matter experimentation practice easily mastered concerned about using math formula shown above can de leted trial error method moving screw hooks up down until correct travel produced event save foam always check set up running wire over templates fore actually making cut Operating Cutter Attach templates foam blank best results use three number 4 finish nails Set core blank position top cut place weight trailing edge position start wire motion Top cut process Remove foam blank Remove wire start position Turn foam blank over Reverse tension line lo cation draw board necessary tapered wings Set blank position bottom cut place weight trailing edge Position start wire motion Remove finished core Move wire start position above described techniques building operating own Man Alone Cutter will make possible cut near perfect cores much superior two-man cutting methods need source foam Soaring Research 19216 Calvert St Reseda Ca 91335 can supply 1 lb density foam blocks 12 X 6 X 40 $1000 42 Model Aviation finished cutter Set U its first task Its parts works will self evident upon examination drawing End view cutter ready loading bridge carries wire left hinged draw board right Ready cut Large paper clip bent slip over nail located center draw boardprevents falling cut progress cut progress note hot wire almost half way through foam Weight draw board does work Lead weights hold foam Another view cutting wire draw line cable pulley wire atop Strip lightly nailed board aligns block foam post paid CAresidents ad 6% shown January February March 1978 issues ModelAviation recommended see top Cut completed photo Having exited foam hot wire stops against nails three-part article Foam Technioues hold alignment strip cutter also turns out tapered cores accurately Weight hinged draw board pulls heated wire through foam Note cable runs over drapery pulley corner board
Edition: Model Aviation - 1979/01
Page Numbers: 41, 42, 43
WOULD believe practical man alone cut good foam cores con sistently can easily done MAMan Alone Cutter time time techniques have made known permit man cut foam cores techniques involve fairly complicated difficult construct machinery job well ap plicable shapes configurations Until now simple one-man tech niques limited simple configura tions some producing poor quality cut cores new technique simple make set up operate Also it applicable Man Alone Foam lines cutting wire Mark position screw hooks pivot board wings taper both hooks will placed equal distance hinge line 20 tapered wings mark posi tion screw hook root end 20 above hinge line tip end place screw hook mark closer 20 above hinge line make cutting wire move quickly over tip tem plate slowly over root tem plate Use #6 finish nails stop cut ting wire after passes through foam hammered table top about edge foam accurately establish screw hook last sensible one-man technique produce poor quality Cuttercores U Bill Evans limited simpleconfigurations 114 Squsre Drapery pulleys l/4 Plywood / Gate hinges 1x4 Pine bridge LIST l/4Plywood 2x4Uprlghts 8 Feet MAN-ALONE FOAM CUTTER Designed Bill Evans........ l/2 Plywood MATERIAL 136 x 24 x 3/4 ply 136x20x 1/2 ply 22 x4x 30 fir 2pcs scrap ply stand support 1piece 10 braided cable U-Control line 22 butt hinges 23/4 dia window shade pulleys 4small screw eyes ALL COMMERCIAL RIGHTS RESERVED airfoils wing configurations includ ing taper method described sim plification authors much complicated automatic equipment MA Cutter system includes flat surface hold core blank tem plates piece ood hinged flat surface tension lines attached pull cutting bow across templates couple small pulleys guide tension lines following narrative drawings photos explain build operate MA Cutter Construction Nail foam blank stop 36 X 24 sheet Nail glue ood spreader across 2 X 4s Nail glue 36 X 24 x 2 gs Nail glue stand support 2 X 4 legs Attach ood draw board using 2 butt hinges Set Up Place foam blank position against stop put weights place shown Place foam cutting bow start-cut position number 4 finish nails ham mered table top hold cutting wire rest away foam Attach tension position 1 Measure length cut over root template length cut over tip template 2 Divide tip length root length 3 Multiply result 20 Example If root 10 tip 8 tip8 ot 10 8 20 istance tip ten sion line screw 4 Set screw hook root cut 20 above January 1979 41 hinge line 5 Set screw hook tip cut 16 above hinge line 6 Attach tension lines respective screw hooks 7 With cutting bow ready position tension lines attached bow wire pivot board check set up letting pivot board pull wire over tem plates test wire enter trailing edge exit leading edge does change length ten sion lines desired start point adjust distance screw hook dis tance hinge line increase speed travel increase screw hook distance hinge technique setting tension wire length screw hook position matter experimentation practice easily mastered concerned about using math formula shown above can de leted trial error method moving screw hooks up down until correct travel produced event save foam always check set up running wire over templates fore actually making cut Operating Cutter Attach templates foam blank best results use three number 4 finish nails Set core blank position top cut place weight trailing edge position start wire motion Top cut process Remove foam blank Remove wire start position Turn foam blank over Reverse tension line lo cation draw board necessary tapered wings Set blank position bottom cut place weight trailing edge Position start wire motion Remove finished core Move wire start position above described techniques building operating own Man Alone Cutter will make possible cut near perfect cores much superior two-man cutting methods need source foam Soaring Research 19216 Calvert St Reseda Ca 91335 can supply 1 lb density foam blocks 12 X 6 X 40 $1000 42 Model Aviation finished cutter Set U its first task Its parts works will self evident upon examination drawing End view cutter ready loading bridge carries wire left hinged draw board right Ready cut Large paper clip bent slip over nail located center draw boardprevents falling cut progress cut progress note hot wire almost half way through foam Weight draw board does work Lead weights hold foam Another view cutting wire draw line cable pulley wire atop Strip lightly nailed board aligns block foam post paid CAresidents ad 6% shown January February March 1978 issues ModelAviation recommended see top Cut completed photo Having exited foam hot wire stops against nails three-part article Foam Technioues hold alignment strip cutter also turns out tapered cores accurately Weight hinged draw board pulls heated wire through foam Note cable runs over drapery pulley corner board