Cox Engines Forum
You are not logged in! Please login or register.

Logged in members see NO ADVERTISEMENTS!


Home Made Foam cutter Cox_ba12




Home Made Foam cutter Pixel

Log in

I forgot my password

Search
 
 

Display results as :
 


Rechercher Advanced Search

Latest topics
» Drones, pretty nifty...........
by rsv1cox Today at 1:23 pm

» Cox 020 PeeWee rebuild questions
by GallopingGhostler Today at 11:56 am

» Took an engine out last week
by rsv1cox Today at 8:10 am

» TEE DEE Having issues
by davidll1984 Today at 7:01 am

» Throttle control for Cox .010 "Viking" engine.
by davidll1984 Today at 6:18 am

» COX .020 POWERED SPEEDSTER
by getback Today at 6:12 am

» Cox extra 300s
by Coxfledgling Today at 4:25 am

» *Cox Engine of The Month* Submit your pictures! -November 2024-
by KariFS Today at 2:49 am

» K&B Sea Fury outboard engine, casting and box repair
by Ken Cook Yesterday at 4:16 pm

» My N-1R build log
by roddie Thu Oct 31, 2024 8:33 pm

» Cox NaBOO - Just in time for Halloween
by roddie Thu Oct 31, 2024 7:50 pm

» The Three Stooges
by 1975 control line guy Thu Oct 31, 2024 9:54 am

Cox Engine of The Month
October-2024
MauricioB's

"Cox .049 Circa 1975, custom."



PAST WINNERS
CEF Traveling Engine

Win This Engine!
Gallery


Home Made Foam cutter Empty
Live on Patrol


Home Made Foam cutter

Go down

Home Made Foam cutter Empty Home Made Foam cutter

Post  akjgardner Sun Jun 11, 2023 11:36 am

Home Made Foam cutter C0a8fc10 don’t know if it’s going to work or not, I need to find a DC Power Supply . I used an adjustable shelf piece so I can easily change the size of the cutter
akjgardner
akjgardner
Diamond Member
Diamond Member

2023 Supporter

2024 Supporter

Posts : 1592
Join date : 2014-12-28
Age : 65
Location : Greensberg Indiana

Back to top Go down

Home Made Foam cutter Empty Re: Home Made Foam cutter

Post  944_Jim Sun Jun 11, 2023 5:00 pm

That's great looking AK. I like the "self-tensioner."

Oh Jerry....where are you?
Jerry built a micro foam cutter for making his Typhoon wings. I think I saw the video on Facebook. I doubt it was over 10 inches across. After all, Typhoon wing panels are only about 6.5 inches (four sections in total).

I seem to remember he used an N-scale model train transformer to power his. A quick eBay shows the bottom entry at about $13...but I'd stay away from N-scale transformers based on the size of your particular "unit." If I had an HO one, I'd send it just to see if it could power yours.

_________________
Never enough time to build them all...always enough time to smash them all!
944_Jim
944_Jim
Diamond Member
Diamond Member

2022 Supporter

2023 Supporter

2024 Supporter

Posts : 2021
Join date : 2017-02-08
Age : 59
Location : NE MS

Back to top Go down

Home Made Foam cutter Empty Re: Home Made Foam cutter

Post  Jerry Sun Jun 11, 2023 7:40 pm

I used an MRC Throttle pack… an HO transformer…   I hooked the foam cutter to the track leads so the rheostat could be used to adjust the current.
Jerry
Jerry
Bronze Member
Bronze Member

Posts : 54
Join date : 2022-10-12
Location : Central Illinois

Back to top Go down

Home Made Foam cutter Empty Re: Home Made Foam cutter

Post  andrew Sun Jun 11, 2023 11:07 pm

Here are pics of my bow and associated power supply.  I use a commercial DC power supply rated at 13.8v driving a DIY PWM heat controller.  The cutting wire is .018 stainless spring steel.  When cutting cores, I use a spreader about 3" inches up from the wire to insure the wire remains very taut -- the end spring takes up any stretch as the wire heats up.

There are several AC hot wire designs on the interweb, but I've found that AC can sometimes set up harmonics in the wire that causes a wavy surface cut.

Home Made Foam cutter Foam_c10
Home Made Foam cutter Foam_c11
andrew
andrew
Diamond Member
Diamond Member

Posts : 1816
Join date : 2011-08-11
Age : 76
Location : Western Kentucky

http://web2.murraystate.edu/andy.batts/ps/POWERSUPPLY.HTM

Back to top Go down

Home Made Foam cutter Empty Re: Home Made Foam cutter

Post  Oldenginerod Mon Jun 12, 2023 1:08 am

We had someone sign up a couple of years back who was making foam cutters and offering them commercially. I don't recall the name.
Oldenginerod
Oldenginerod
Top Poster
Top Poster

Posts : 4017
Join date : 2012-06-15
Age : 62
Location : Drouin, Victoria

Back to top Go down

Home Made Foam cutter Empty Re: Home Made Foam cutter

Post  getback Mon Jun 12, 2023 7:28 am

Here it is Rod > https://www.coxengineforum.com/t14602-precision-foam-cutting-bows-titanium-wire-adjustable-tension?highlight=making+foam+cutters Nice looking set up starting to come together there Joe . Andrew, you got it going on sure it does a good job for you . This Site Rocks!
getback
getback
Top Poster
Top Poster

2022 Supporter

2023 Supporter

Posts : 10409
Join date : 2013-01-18
Age : 67
Location : julian , NC

Back to top Go down

Home Made Foam cutter Empty Re: Home Made Foam cutter

Post  Sponsored content


Sponsored content


Back to top Go down

Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum