Prep for powdercoating. Should I….?
I’ve a worthless old frame that I was going to recycle into a SS and get a cheap powedercoating.
I will leave in the old BB and headset, and put bolts in all threaded bits. How can I tidy these up after the powdercoat? I don’t necessarily just them to do it and it is only a £30 job for blast and coat.
The pedant in me is considering removing the canti brake bosses and gear cable guides – is this easily done and worth the bother?Posted 5 years ago
So don’t leave the BB, headset and bolts in? I’m conserned they will nack these areas if they are careless with the blasting. There was a thread last week about a loose headset due to this. Or maybe I should remove everything and just tell them where to be extra carefulPosted 5 years agoalexathomeMember
Get some cheap bolts and big washers, that’s what i did. I also kept bolts in the bottle holes and canti bosses. If they use too course a glass, or let the nozzle linger too long it’ll damage the thread, it’ll also blow through thin tubes, if they are really clumsy, should be ok with a gas pipe Mtb thou with any luck.Posted 5 years agobristolbikerMember
Can’t say I’ve ever had any probs with threads being damaged during blasting. Likewise, if they have ever seen a bike frame before they will know where to mask and to stuff rockwool in small threads. A few well aimed questions should determine pretty quickly how good a job you’re likely to get 😉Posted 5 years agoalexathomeMember
+1 for bristolbikers advice. But you never know if you might get a monkey on the job once you’ve left. Threads may not look damaged, but as material (metal) is removed (hence the rouge finish) the threads will be weakened if they take a direct blast. Washer and a bolt, don’t take the risk.
I shot blast a lot of frames, i know how wrong it can go! 😳Posted 5 years agoteamslugSubscriber
We use ducktape when we send things for blasting. Cos its quite soft the blast medium bounces off. With regards to masking, the best thing i have found for use with powder coating, without using expensive and inflexible hi-temp tape, is Ali foil flashing tape. Available for a few quid from building supplies. Its can take the heat and peels off easily afterwards.Posted 5 years ago
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