Epoxy Coating, New Seat Post Mount

Posted: 6th August 2010 by Nigel in Miscellany

In order to waterproof and otherwise protect the bamboo, I finally decided that I would have to put on a coating. I really loved the look of the bare bamboo, but after I got my first scratch, I decided for the good of the bike I would have to put on a protective coating. Since I had lots of epoxy, I went with an epoxy coating. I sanded the all of the bamboo surfaces with 80 grit wood sand paper, and wiped the dust off with a damp rag. Then I mixed up a batch of high optical clarity epoxy, and diluted it 50/50 with acetone. The acetone thins the epoxy out, and helps it to get absorbed into the wood. It took more than 24 hours to set, and I am really happy with the result. It created a much deeper, more saturated luster, with a little gloss to it.

While I was at it, I also had to repair the seat post mount. The original method I used to mount the seat post turned out to be highly ineffective. Basically after about an hour of riding, the bond between the piece of steel and the carbon broke.

Old seat post mount: I rebuilt it by cutting off the top 2cm, wrapping a seat post in a non-stick tape, and laying up some carbon. Once it cured, I cut the carbon with a hack saw to create space for the clamp to squeeze the tube. Hopefully this will work.