Technical & Reference Section > Tech and Restoration

Powder coat problem :(

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animal:
I always use a dremel with a little sanding disc on it and get all the powder off the inside of the BB and headset cups where they fit  ;) If u don't and force the cups in it will crack the powder or chip it off making a mess . Same applies on painted frames  :daumenhoch: Also grease the cups before fitting that helps aswell.

Finny:

--- Quote from: gizmo on October 07, 2012, 10:43 AM ---Hi just got a frame back from powder coating , but the bottom bracket cups won't fit
as they powdered inside the bb  :(
Had a 4lb sledge hammer on it ( with a block of wood either side lol ) & nothing
 
Any ideas ? Part from dont take it there again  :LolLolLolLol: ta

--- End quote ---

The thing is if you have the cup on a very slight angle and I mean slight, it wont go, lay bike on side on a blanket with wood underneath the BB, and another piece of wood on top of the cup, hold it square and get someone else to do the hammering (If you trust them) some of mine have been a pig to get in and thats with no powder on the inner BB Tube, should go in mate!!  :daumenhoch:

midschooljon:
Just remove the paint from inside the BB using any one of the methods mentioned. Do NOT smash them in with a hammer or even inset frozen cups. Both methods work, but in a year or so when you want to swap cranks, or strip the bike to sell, you will wish you had never done that because they will not come out.

Twesnik:

--- Quote from: ANIMAL on October 07, 2012, 02:15 PM ---I always use a dremel with a little sanding disc on it and get all the powder off the inside of the BB and headset cups where they fit  ;) If u don't and force the cups in it will crack the powder or chip it off making a mess . Same applies on painted frames  :daumenhoch: Also grease the cups before fitting that helps aswell.

--- End quote ---


+1.
 :daumenhoch:

kev-s:
as already said remove any excess powder from the bb using a dremel/sandpaper etc...

you get this with almost every powder coater as they dont/wont spend the time masking up these areas

i know dan does but his powder is show condition and is reflected in the price

some people expect too much from a £25 powder coat job :daumenhoch:

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