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Fix a Very Broken Surf Board

Step 14Undercatalyzed!

Undercatalyzed!
The curing oven didn't work on the last batch of putty. It's not getting hard.
No amount of baking in the curing oven does the trick.
I check the epoxy metering pumps "ketchup pumps" and see that the hardener pump only springs up part way when you pump it. Damn. I've been getting short shots of hardener.

How do you remove this crap? By trying. This big sanding disk got all caked with crap. Then I cleaned the sanding disk by grinding on that chunk of steel square tubing in the background.
Then back to the surfboard, trying to knock the crap off the board. And repeat.
It was kind of like smearing clay around with a big eraser.
Eventually the board looked like it had been abused by mechanics and the bad putty was mostly off it.

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1 comment
Nov 19, 2009. 1:29 PMgeorge67 says:
Thank you including mistakes and misadventures.  I often have as many eureka moments with them as I do the good tip and advice you provide.  I'm sure documenting them is not as fun as showing total victory so I'd also like to applaud the fortitude you show by doing so.

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Author:TimAnderson
Tim Anderson is the author of the "Heirloom Technology" column in Make Magazine. He is co-founder of www.zcorp.com, manufacturers of "3D Printer" output devices. His detailed drawings of traditional ...
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