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Old Nov 07, 2004, 10:27 PM
Sand it round!
DennisRB's Avatar
Brisbane Australia
Joined Oct 2004
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Building EPP flying wings from scratch

I think I want to get setup to make my own EPP wings from scratch. I tried to do a search on foam cutting and got some ideas and a lot of conflicting information, so I'm still not sure what I need and where I can get it.

I was thinking of using the "bow" method, but I'm not sure where I can get suitable high resistance wire and what type of power supply is the best (cheapest )

Also where is the best place to get EPP and how expensive is it?

Cheers
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Old Nov 07, 2004, 10:35 PM
Crikey never leave beer behind
steve wenban's Avatar
Mt Annan Sydney Australia
Joined Dec 2003
23,438 Posts
Dennis I use 2 12volt deep cycle car batteries through 032" stainless lire I have found this to be the best combo for my cutting this one of my small bows which works great.
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Old Nov 07, 2004, 10:37 PM
Crikey never leave beer behind
steve wenban's Avatar
Mt Annan Sydney Australia
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PS you dont want high resisitance wire you want something with the lowest resistance you can get
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Old Nov 07, 2004, 11:31 PM
Sand it round!
DennisRB's Avatar
Brisbane Australia
Joined Oct 2004
720 Posts
I was worried about shorting the power supply out, but I suppose once it heats up the resistance will increase enough to limit the current (sounds scary though)

Are you just, hooking 2x12 to make 24V, do you use any form of resistors? Where do you get the wire and foam?

Cheers
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Old Nov 07, 2004, 11:37 PM
Crikey never leave beer behind
steve wenban's Avatar
Mt Annan Sydney Australia
Joined Dec 2003
23,438 Posts
the EPP from Kye of Wowings fame and the EPS you can get just about anywhere no resistors if Iam cutting hot I'll use the batteries wired in series to give me 24volts but normal cutting just parrallel 12 volts
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Old Nov 07, 2004, 11:38 PM
Crikey never leave beer behind
steve wenban's Avatar
Mt Annan Sydney Australia
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PS fishing stores carry stainless trace with out the nylon covering
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Old Nov 07, 2004, 11:42 PM
Sand it round!
DennisRB's Avatar
Brisbane Australia
Joined Oct 2004
720 Posts
Thanks. How long of a span of EPP would one 12V battery cut?
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Old Nov 07, 2004, 11:44 PM
MINE!
Mick Molloy's Avatar
Australia, VIC, Point Cook
Joined Jul 2003
3,202 Posts
I have plenty ok .020 lockwire Dennis, also a friend will cut wings as required on his CNC cutter, I think about $20 you supply the EPP for a wing.

A 12v battery and a light dimmer switch work well
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Old Nov 07, 2004, 11:47 PM
Sand it round!
DennisRB's Avatar
Brisbane Australia
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Thanks, $20! Thats alright. Is that per section or what?
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Old Nov 08, 2004, 12:08 AM
Crikey never leave beer behind
steve wenban's Avatar
Mt Annan Sydney Australia
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there ya go Dennis problem solved
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Old Nov 08, 2004, 12:11 AM
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DennisRB's Avatar
Brisbane Australia
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Maybe I would still like my own cutter though, but the CNC sounds like it would do a better job.
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Old Nov 08, 2004, 12:16 AM
Crikey never leave beer behind
steve wenban's Avatar
Mt Annan Sydney Australia
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only worth the effort if you are going to cut heaps of wings takes up alot of room on your bench so if your only cutting the occasional set its not worth the cost and effort to det up the cnc machine
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Old Nov 08, 2004, 12:25 AM
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AntonL's Avatar
Melbourne, Victoria, Australia
Joined Feb 2004
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Steve, I think Mick was saying that his friend would cut them to order.

Mick - OOI, roughly how much does your friend charge for labour to cut a set of cores?
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Old Nov 08, 2004, 12:25 AM
MINE!
Mick Molloy's Avatar
Australia, VIC, Point Cook
Joined Jul 2003
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Quote:
Originally Posted by steve wenban
only worth the effort if you are going to cut heaps of wings takes up alot of room on your bench so if your only cutting the occasional set its not worth the cost and effort to det up the cnc machine
I second that its a lot of effort you could have made 100 wings in the time it takes to setup a cnc.
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Old Nov 08, 2004, 12:31 AM
Crikey never leave beer behind
steve wenban's Avatar
Mt Annan Sydney Australia
Joined Dec 2003
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Quote:
Originally Posted by AntonL
Steve, I think Mick was saying that his friend would cut them to order.

Mick - OOI, roughly how much does your friend charge for labour to cut a set of cores?
yep but dennis was still keen to have a go at cutting his own as well just thought I throw in the setup time and value for a cnc machine
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