Re: [RBW] Re: Removing powder coat from canti brake studs

2016-01-14 Thread Eric Norris 
I would wipe a little grease or heavy oil on the posts before you install the 
brakes, so that rust doesn't take hold there. 

–Eric N


> On Jan 14, 2016, at 2:13 PM, WETH  wrote:
> 
> Tim,
> This happened on a a bike I had powder coated.  Sandpaper worked fine.  And 
> all was covered when the brakes were installed on the posts.  I had to do the 
> same thing to the downtube shifter bosses.
> All the best,
> Erl
> 
>> On Thursday, January 14, 2016 at 3:15:26 PM UTC-5, Tim Gavin wrote:
>> I recently had the frame and fork of my '88 Schwinn KOM blasted and powder 
>> coated.  I went with a clear powder with a little sparkle in it, and it 
>> looks fantastic.  I'll post pictures once I take some.
>> 
>> The blast and powder was less than $150 total (hooray!) but the shop didn't 
>> mask the brake posts on the fork or frame (boo!).  The cantilever (and 
>> U-brake) calipers don't fit over the now-thicker posts.  This shop is 
>> regarded well for bicycle jobs, so perhaps they assigned it to a new guy 
>> that day.
>> 
>> What's the best method to remove the powder coat from these spots?
>> Sandpaper?  Start with very coarse grit and work finer?
>> Wire brush?  I think I have one for my Dremel tool
>> Chem stripper?  I could brush it on precisely with a paintbrush
>> Razor blade?  (whittling method) May be the easiest way to start 
>> Regardless of the method, I'll fit a washer around the base of the post to 
>> protect the rest of the frame from my efforts.
>> 
>> Thanks,
>> Tim Gavin
>> Cedar Rapids, IA
> 
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Re: [RBW] Re: Removing powder coat from canti brake studs

2016-01-14 Thread Tim Gavin 
Thanks, Bill. 
I did exactly that with 50 grit emery cloth, and then followed it up with 150 
grit. 

Tool cost: $3.83, and I still have 10 inches of each sheet. The emery cloth is 
MUSA, and I bought it from a family-owned hardware store.

It took about 10 minutes per post, and the dust was minimal.

I will definitely grease the posts before installing the brakes.

Thanks for the advice, everyone!

I'll take pictures next time I'm home during the daylight.

Tim

Sent from my iPhone

> On Jan 14, 2016, at 2:49 PM, Bill Lindsay  wrote:
> 
> I recommend the cloth backed sandpaper.  You rip a 1" wide strip and go back 
> and forth like shoe shine.  
> 
> Bill Lindsay
> El Cerrito, CA
> 
> On Thursday, January 14, 2016 at 12:15:26 PM UTC-8, Tim Gavin wrote:
>> 
>> I recently had the frame and fork of my '88 Schwinn KOM blasted and powder 
>> coated.  I went with a clear powder with a little sparkle in it, and it 
>> looks fantastic.  I'll post pictures once I take some.
>> 
>> The blast and powder was less than $150 total (hooray!) but the shop didn't 
>> mask the brake posts on the fork or frame (boo!).  The cantilever (and 
>> U-brake) calipers don't fit over the now-thicker posts.  This shop is 
>> regarded well for bicycle jobs, so perhaps they assigned it to a new guy 
>> that day.
>> 
>> What's the best method to remove the powder coat from these spots?
>> Sandpaper?  Start with very coarse grit and work finer?
>> Wire brush?  I think I have one for my Dremel tool
>> Chem stripper?  I could brush it on precisely with a paintbrush
>> Razor blade?  (whittling method) May be the easiest way to start 
>> Regardless of the method, I'll fit a washer around the base of the post to 
>> protect the rest of the frame from my efforts.
>> 
>> Thanks,
>> Tim Gavin
>> Cedar Rapids, IA
> 
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Re: [RBW] Re: Removing powder coat from canti brake studs

2016-01-14 Thread Chris Chen 
It may also be nice to wear some breathing protection, or sand wet!

On Thu, Jan 14, 2016 at 2:13 PM, WETH  wrote:

> Tim,
> This happened on a a bike I had powder coated.  Sandpaper worked fine.
> And all was covered when the brakes were installed on the posts.  I had to
> do the same thing to the downtube shifter bosses.
> All the best,
> Erl
>
>
> On Thursday, January 14, 2016 at 3:15:26 PM UTC-5, Tim Gavin wrote:
>>
>> I recently had the frame and fork of my '88 Schwinn KOM blasted and
>> powder coated.  I went with a clear powder with a little sparkle in it, and
>> it looks fantastic.  I'll post pictures once I take some.
>>
>> The blast and powder was less than $150 total (hooray!) but the shop
>> didn't mask the brake posts on the fork or frame (boo!).  The cantilever
>> (and U-brake) calipers don't fit over the now-thicker posts.  This shop is
>> regarded well for bicycle jobs, so perhaps they assigned it to a new guy
>> that day.
>>
>> What's the best method to remove the powder coat from these spots?
>>
>>- Sandpaper?  Start with very coarse grit and work finer?
>>- Wire brush?  I think I have one for my Dremel tool
>>- Chem stripper?  I could brush it on precisely with a paintbrush
>>- Razor blade?  (whittling method) May be the easiest way to start
>>
>> Regardless of the method, I'll fit a washer around the base of the post
>> to protect the rest of the frame from my efforts.
>>
>> Thanks,
>> Tim Gavin
>> Cedar Rapids, IA
>>
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