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Frame painting jig

#1 2011-11-24 12:00pm

dirkBMX
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Frame painting jig

I am sure I am not alone in my frustrations in painting a frame.

Usually when I paint a frame I hang it from something in the garage and then try to maneuver around it and try to get into every nook and cranny. More times than not, there is just one spot that either does not get any color or the paint or clear ends up being very dry. I don't paint many frames, but was thinking of a better way to do it.

I wanted to share the simple jig I came up with in case anyone else also fights with getting their desired results. Aside from the turned piece to fit in the bottom bracket shell, it took about 15 mins and cost maybe $5.00 (I had scrap wood laying around). I am sure there is something else you can use in place of the turned wood piece, but I have access to a small lathe and was able to spend the 15 mins to turn it. Next up is one for an American BB shell.

Sure I could have made it much more refined, but to tell the truth, I just wanted something quick and easier and that I don't mind just chucking it if I no longer have the need for it.

If anyone has any specific questions, just ask.

How it works is there is a piece of all thread that gets tightened with the star hand-wheel. This pulls the coupler into the split piece of wood in the bottom bracket shell, holding it snug against the inside of the shell. The 3/4" dowel is there so that I can rotate and reposition the frame easier and hold it in place while I snug the hand-wheel. I only used it once and it worked very well! I did not have any missed painted areas and the clear had minimal dry spots.

Thanks for looking.

http://img.photobucket.com/albums/v420/Pneufab/paint%20crap/IMG_2297.jpg
http://img.photobucket.com/albums/v420/Pneufab/paint%20crap/IMG_2300.jpg
http://img.photobucket.com/albums/v420/Pneufab/paint%20crap/IMG_2298.jpg
http://img.photobucket.com/albums/v420/Pneufab/paint%20crap/IMG_2299.jpg
http://img.photobucket.com/albums/v420/Pneufab/paint%20crap/IMG_2264.jpg
http://img.photobucket.com/albums/v420/Pneufab/paint%20crap/IMG_2263.jpg
http://img.photobucket.com/albums/v420/Pneufab/paint%20crap/IMG_2262.jpg

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#2 2011-11-24 2:02pm

EZ SPEED
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Re: Frame painting jig

cool idea !


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#3 2011-11-24 2:47pm

Renarac
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Re: Frame painting jig

What a handy idea.
Thank you for sharing. I'll be using this next time I paint a frame. Much better than a coat hanger.

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#4 2011-11-24 7:02pm

wired
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Re: Frame painting jig

Very cool.  What's the base look like?

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#5 2011-11-24 8:28pm

dirkBMX
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Re: Frame painting jig

wired wrote:

Very cool.  What's the base look like?

haha

scrap wood!!!

http://img.photobucket.com/albums/v420/Pneufab/paint%20crap/IMG_2296.jpg

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#6 2011-11-24 8:56pm

wired
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Re: Frame painting jig

Awesome job.  Thanks for sharing it!

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#7 2011-11-27 12:35pm

dirkBMX
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Re: Frame painting jig

Well I did a little thinking. Since there are four different bottom brackets, Euro, Spanish, Mid and American, and I own all four, I would need to make four different adapters for each. I came up with this design instead. It is tapered from 1-1/4" to 2-1/4" so it will sucessfully work on all sizes! I like this design much better!

Not bad for two chunks of 2x4 glued together and about 30 mins on the lathe, if I do say so myself!

Now I think I am going to work on a more permanent stand and then a work clamp to use it as a repair stand when not used for painting (thanks Wired for the reverse idea on this one!)

The tapered wedge

http://img.photobucket.com/albums/v420/Pneufab/paint%20crap/IMG_2305.jpg
http://img.photobucket.com/albums/v420/Pneufab/paint%20crap/IMG_2306.jpg

Shown on an American BB

http://img.photobucket.com/albums/v420/Pneufab/paint%20crap/IMG_2303.jpg
http://img.photobucket.com/albums/v420/Pneufab/paint%20crap/IMG_2302.jpg
http://img.photobucket.com/albums/v420/Pneufab/paint%20crap/IMG_2301.jpg

Shown on a Euro BB

http://img.photobucket.com/albums/v420/Pneufab/paint%20crap/IMG_2307.jpg
http://img.photobucket.com/albums/v420/Pneufab/paint%20crap/IMG_2308.jpg

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#8 2011-11-27 1:22pm

wired
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Re: Frame painting jig

Very creative and nice lathe work!  You've got some skills and I'll bet your work stand will be cool too.

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#9 2011-11-27 4:40pm

MiniZ
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Re: Frame painting jig

Very cool


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#10 2012-03-07 3:42pm

TH1ST
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Re: Frame painting jig

marked.


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#11 2012-04-01 8:36am

mannequinforce
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Re: Frame painting jig

This is BA!

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#12 2012-09-23 3:23pm

chach1970
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Re: Frame painting jig

ok this is my painting jig i dont have a lathe so i just went with pvc pipeing 1 1/2 inch pipe works quite well

http://i1078.photobucket.com/albums/w486/chach70/004_zps9b35d958.jpg
http://i1078.photobucket.com/albums/w486/chach70/002_zps578dc4a9.jpg
http://i1078.photobucket.com/albums/w486/chach70/003_zpse867b071.jpg


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#13 2012-09-23 3:32pm

80sbikedude
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Re: Frame painting jig

Good ideas smile


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#14 2016-12-01 5:43pm

Indyjps
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Re: Frame painting jig

http://i1259.photobucket.com/albums/ii552/Indyjps/20161201_193049_zpsyze0bzyt.jpg

So simple.  Black pipe,  with a hose clamp wrapped around it,  the head tube slips over the black pipe and rests on the hose clamp,  it sits inside and the frame hangs.

Insert the black pipe into a concrete block and hammer some wood scraps into the block to lock everything tight.  I usually use 2 blocks. 

If you're working outside, just hammer the black pipe into the ground.

You can always use 1/2" electrical conduit across 2 ladders thru the top tube.


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#15 2016-12-01 5:48pm

Indyjps
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Re: Frame painting jig

I shoot everything with a paint gun. So this gives plenty of room to move around and get even coverage.

The last few frames were base clear with pearl, being able to get smooth passes with no fixtures in the way, is key to getting the pearl to lay evenly.


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