Hello wooden boat folks,
I have started a wooden drift boat build and ran into (created) a problem I would like some advise on. I am using West System 105/205 epoxy and using the 300 mini pump set. I checked the calibration by volume, I could not find a scale, it seemed very, very close. Although, I now see that something is terribly off. I have used about 1/2 gallon of resin and a full quart of hardener! Way off the correct ratio. I have used this improper ratio on all of my scarph joints and to glass one side of a side panel. This mix worked well on three test scarph joints, the plywood broke not the joint. The epoxy seemed to behave fine, it did not cure to quickly or slowly and its application properties were very workable. The problem will stop here, I will find a set of scales or measure each batch by volume.
My question are these:
1) Will this ratio have sufficient strength? Or will the remaining fiberglass work provide enough strength to compensate for the improper ratio?
2) If I must break these parts apart and start over, how would I go about that?
Any other insight would be appreciated! Thanks in advance for any help.
Dorf & Brad, thanks for the vinegar tip.....good to know! Bye bye acetone!
All, good stuff. Thanks for the replies, I'm gonna try that vinegar trick. I am adding a 16" wide strip of glass to each side of all of the scarfs and call it good. I bent all of the panels to a more sever degree than they will be on the boat, no signs of any distress. Feeling much better now.
As an aside....I called West System last Friday after I discovered the problem and left a message. They called back Monday morning, of course I was in the duck blind with a crappy cell signal. We finally made contact yesterday.
Two observations from that conversation. First, the tech (Tom P) really knows his stuff! He diagnosed the problem to a check valve in the resin pump. He also had strength values for improper ratios, very helpful in determining what my next step would be. Second, this company really stands behind the products they make! Had I got the chance I was going to ask them for a new quart of hardener, before I could, Tom told me they were sending a gallon of resin, a quart of hardener, a new set of pumps and a couple yards of glass cloth!
I cannot remember the last time I called tech support and found them to be helpful, let alone a company that stands behind their products. I was very, very impressed and felt they deserved some public kudos.