Techniques > How to...
Foam Sheets
stephen.shannon:
Bloody hell, when one thinks about foam one would expect it to be straigth forward, but oh know.... I seemto have an amazing ability to get into things that are impossible to source..... :!:
Anyway it appears what I bought yesterday was a polystyrene board not expanded polypropylene like I needed. Just in case you're interested Polystyrene is much more ridgid but is brittle with it....
It appears there is a place in the UK that sells it but its 39euro for 1m x 1m x 30mm, I've sourced a Polyethelene board in Dublin but I'm not sure it will do the job.... off to do more research..... :? :? step in here any time lads if you've any input thanks.....
billscottni:
You sure you're not looking for Expanded Polypropylene (EPP)?
polyethylene is the sort of greasy stuff that comes as packaging with high end electronics.
stephen.shannon:
HI Bill,
Yea its EPP i'm looking for the only stuff I could find readily available in sheets in Dublin was polythelene "which is the geasey stuff"
I think I settle for the sheets I can import from the UK, the price is reasonable and its on line for ordering.
stephen.shannon:
So I cut my first wing section last night with my hand made bow. its a tad rough but its all learning....
[youtube]https://www.youtube.com/v/vGBH7uMOS0w[/youtube]
billscottni:
You need to increase the wire tension in your bow, that's why the ridges form a semi circle towards the TE. Always cut bottom first, top second. Only move the bow as fast as the foam melts. If you're serious about foam cutting, build a "drop arm cutter". Simple & effective and works hands off!
http://www.charlesriverrc.org/articles/tools/brengmancutter.htm
http://www.charlesriverrc.org/articles/foam_vac/mrcss_foamcutter.htm
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