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| Paxolin rod/bar anything similar? |
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| raynerd:
Hi Guys, I`m about to start a project which requires a 1/2" paxolin bar however quite a bit of googling has not brought anything up at all! -there a few places selling paxolin thin sheet but that is it. I need about 12", probably less. Does anyone know anything with similar properties. Without giving away my intended project at this point, I believe the intended use of paxolin is for low expansion with small changes in room temperature. Could anyone suggest anything else suitable (or a paxolin bar supplier if possible). During my googling I`ve found Tufnol mentioned often in the same sentence as paxolin. I also know someone who has used a fiberglass rod in place of the paxolin which apparently worked quite well - I`ve googled this instead but I think I need to be more specific than simply "fibreglass". I expect some of these other plastics would work as well but I was hoping someone with more understanding of the different types could give me some advice. These guys seem to stock a good range: http://www.directplasticsonline.co.uk/ Any help appreciated. Chris |
| andyf:
Tufnol is posh paxolin, Chris. ShopforPlastic say they do it in rod form: http://www.shopforplastic.co.uk/plastic-engineering-materials-1-c.asp . I've used them for Tufnol offcuts and found them prompt and cheap. Also, a search on Ebay for Tufnol Rod turns up two results. One is 50mm bar and the other 12mm. Andy |
| Bluechip:
Chris Tufnol is a trade name ie, a company. Like Biro / Hoover. Two general groups: SRBF synthetic resin bonded fabric. SRBP sythetic resin bonded paper. Many different grades / uses. Carp, Whale, Kite etc. etc come to mind, others exist. http://www.tufnol.com/tufnol/default.asp?id=92 And .. http://www.tufnol.com/tufnol/default.asp?id=21 Dave BC |
| Spurry:
You might find what you need at MacGregors, I have bought paxolin and grp sheet offcuts from them . http://www.macgregor.co.uk/plasticmain.htm Pete |
| Boz:
I'll second http://www.shopforplastic.co.uk (Davis Industrial Plastics) as a supplier , I've recently bought Nylon66 from them recently and got good service. A couple of reminders - best to wear a dust mask while machining or sanding it. The dust can do nasty stuff to your lungs. The other thing is that the thermal expansion and the strength is different in different planes. Think plywood. Tufnol and its' relatives are layered products so they expand more between the layers than they do along the layers. They also delaminate very easily. So they are strong along the layers (especially the glass based products like 10G40), but will split like plywood between the layers. I'm rustier on the rod forms - I think they are spiral wound, so strength wise they are similar to the grain in a tree. So they expand more radially than along the rod. They can also split radially if a hole is too near the curved surface. Regards Boz |
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