You are reading a single comment by @DoktorSpoor and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
@DoktorSpoor
Hi Socktoy,
joints will be fine, I have used Armourtex to powder-coat some of my sculpture with good results, I wouldn't worry about any welding methods at all. Last piece of artwork had silver soldered joints that's 600's - 650C range, brazed (bronze/brass rods) that's your high 800's to 900's Centigrade range and arc welded joints (not that you would do that on a bike!)
Their grit blasting seems pretty safe, what I did learn was that getting an oven burn-off before powdercoat can really help clean off any greases,oils etc.. which was really worth the effort preventing finish problems.
Grit blasting comes in many flavours, a spectrum of aggression if you like, so enquire.
There are other firms who do a lot of bikes but you will pay more, so if it were a peach of a frame maybe Argos at the upper end or also try Windridge.
The only joining method that would fail with powder coat temperatures would be ordinary tin/lead solder which ranges in the 200's C, this would never be used to build a bike anyway.
Don't worry it will be safe, and it's probably just been an adhesion problem of the coating.
Cheers.
[U][/U]