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West epoxy - expanding under LP?
You can see the results of my hole filling technique he
http://www.advantagecomposites.com/t...8-0869_img.jpg This picture shows a bow section after installing a second layer of 1/4" ply over the first, kind of like cold molding on a bigger scale. Lots of screw holes. The fills are all very smooth and flush. I used epoxy/silica plus a little microballoons for the filling mixture. In the past, I've tried filling holes then using a putty knife to scrape it off flush while soft but it seems to always leave a hollow over the hole so you have to do a second pass. The second pass can sometimes _still_ have a hollow. The method of filling and leaving it slightly overfilled followed by using a SurForm to bring it flush after curing is faster and gives better results. Your mileage may vary, but this is what works well for me. -- http://www.advantagecomposites.com/tongass -- My 22' Tolman Skiff project http://www.advantagecomposites.com/catalog -- Discounted System Three Resins products .. "Old Nick" wrote in message ... On Thu, 15 Apr 2004 02:59:36 GMT, "Brian D" vaguely proposed a theory ......and in reply I say!: remove ns from my header address to reply via email Not the same solution as mine. But I agree with the idea that the surrounds go down faster than the filler, in almost all cases. When I fill holes, I usually let them stay bumped up a little until after curing, then I use a SurForm or scraper (or both) as appropriate to bring it down flush. Sanding seems to remove material around the hole more than it removes the filler in the hole, so I don't sand. I then coat the whole section a couple of times (usually 3) prior to painting. Works for me. ************************************************** ** I went on a guided tour not long ago.The guide got us lost. He was a non-compass mentor.........sorry ........no I'm not. |
#12
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West epoxy - expanding under LP?
What's in the 407 and the 410? I know WEST has some fillers with cotton
fiber in them, others have plastic, but I can't remember which is which. My favorite mix for hole filling is 75% silica, 25% microballoons (phenolic). A separate post talked about my fill it, cure it, SurForm it way of making a smooth fill with fewer passes, but here's a picture of how it turns out: http://www.advantagecomposites.com/t...8-0869_img.jpg Brian -- http://www.advantagecomposites.com/tongass -- My 22' Tolman Skiff project http://www.advantagecomposites.com/catalog -- Discounted System Three Resins products .. "Old Nick" wrote in message ... On Thu, 15 Apr 2004 22:53:52 -0700, BCC vaguely proposed a theory ......and in reply I say!: remove ns from my header address to reply via email there is/was no wood "plugs" - there's 3/4" marine ply that's been in there for 26 years - and why would a ring of 6 holes expand? turns out West says their 410 additive can expand - they now say use only 407. OK. I and one other posted saying that the sanding may be the problem. OOI, can we hear back what happens with the non-expanding filler? We may be wrong, but we tried to help..... ************************************************** ** I went on a guided tour not long ago.The guide got us lost. He was a non-compass mentor.........sorry ........no I'm not. |
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