Sid Wood wrote: > The catalyst to activate the vinylester resin can be adjusted for the > ambient temperature; use more or less catalyst: 0.5 cc catalyst per 8 oz > resin for 20 minute working times at 100 degrees F versus 3 cc catalyst > per > 8 oz at 60 degrees F. The manufacturer's info sheet has the call-outs.
That sounds easy, but even with a tiny syringe half the diameter of a pencil, a half cc is a tiny amount of liquid. If I remember correctly, I was down to a matter of drops, and this stuff still cooked like crazy. It may have been over promoted...I don't know. I do have the specs for Derakane, as well as the material compatibility matrix. It was interesting to me that they list compatibility of straight auto fuel and auto fuel with a high percentage of ethanol to be about the same (within their limited testing), so the manufacturer is fairly confident of its ethanol resistance. Mark Langford n5...@hiwaay.net website www.n56ml.com
