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Will fiberglass resin work as a decent epoxy?

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Forum topic by Milo posted 07-12-2010 11:28 PM 1919 views 0 times favorited 6 replies Add to Favorites Watch
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Milo

869 posts in 2785 days


07-12-2010 11:28 PM

Topic tags/keywords: question

I’m working on my V Drum sander project, and I am at the point to fill my pvc pipe with the circle cutout on the center rod. The cutouts are just a tad bit too small. Since I need to epoxy them in, I’m not too worried about it, I’m hoping it will fill nicely (I HOPE!)

Here’s my main question. I’ve got a quart of fiberglass resin sitting around from my cyclone project. I almost NEVER use fiberglass, and I was thinking that the liquid fiberglass would work nicely for thee reasons.

1) I have it, and it’s not going anywhere.

2) I may be able to use some of the leftover cloth to fill in between the cutouts and the pipe.

2), it will flow and fill, and if I tip the drum on end, hopefully it won’t settle in one place and unbalance the drum. It will fill to the top (hopefully).

But fiberglass can be brittle. Would this be a problem? It WILL be inside the pvc pipe.

Opinions?

THANKS!

Milo

-- Beer, Beer, Thank God for Beer. It's my way of keeping my mind fresh and clear...


6 replies so far

View Michael Murphy's profile

Michael Murphy

452 posts in 2471 days


#1 posted 07-12-2010 11:32 PM

Fiberglas resin is meant to be used with cloth or felt in thinner layers. It sounds like you are going to try to fill a large volume with it. Just wondering if there is a thickness recommendation/limitation on the can or in the instructions.

-- Michael Murphy, Woodland, CA.

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dbhost

5607 posts in 2698 days


#2 posted 07-12-2010 11:36 PM

I would also be worried about using PVC for the drum itself. I would think it would get soft, and out of round as it heated up, and the presence of epoxy / resin seems to me would eliminate any chance of any air pockets helping to cool the drum…

You might consider making your drum out of a sandwich of wooden disks instead.

-- My workshop blog can be found at http://daves-workshop.blogspot.com

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Milo

869 posts in 2785 days


#3 posted 07-12-2010 11:45 PM

Mike and dbhost.

The pipe is going to be filled with wooden disks sandwiched together. I was going to wrap the disks in fibereglass and put it in the tube for a snug fit.

dbhost, are you saying I SHOULD make sure there are air pockets in the tube for cooling?

Mike, does this info put your worries aside some?

Dave, I’ll have to check, but it’s generic Walmart fiberglass, so probably Bondo or 3M.

Thanks!

-- Beer, Beer, Thank God for Beer. It's my way of keeping my mind fresh and clear...

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dbhost

5607 posts in 2698 days


#4 posted 07-12-2010 11:57 PM

Just my thought process spewing out. I am not really sure. It just seems funny to me is all… Darren on www.woodworkingtalk.com built one with a wood and PVC drum a couple of years ago, haven’t seen any updates on it. But his was just disks bonded to the PVC, not filled… It might work perfectly fine. Who knows? Certainly not me…

-- My workshop blog can be found at http://daves-workshop.blogspot.com

View ClayandNancy's profile

ClayandNancy

511 posts in 2481 days


#5 posted 07-13-2010 12:07 AM

I don’t believe overheating is a problem with the V-drum sander as the hook and loop paper lifts off the drum a tad due to centrifugal force. Just make sure your drum is centered very accurately on the shaft so as not to have any wobble.I ‘m sure you’ll hear from some others who have made the sander.

View Ger21's profile

Ger21

1047 posts in 2597 days


#6 posted 07-13-2010 04:28 AM

I think the polyester resin might melt the PVC, but I’m not sure.

-- Gerry, http://www.thecncwoodworker.com/index.html http://www.jointcam.com

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