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Resin over wood mold

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Forum topic by willhime posted 08-09-2018 04:41 PM 322 views 0 times favorited 4 replies Add to Favorites Watch
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willhime

122 posts in 1684 days


08-09-2018 04:41 PM

Topic tags/keywords: question jig resource tip trick router tablesaw finishing milling sanding shaping

I used melamine particle board to make the sides of a resin cast over a piece of fragile mesquite. I used a release spray, then caulked the outside edges to seal it. I’m trying to figure out how to get the sides off with cracking the solid resin areas. My initial idea was to flush trim route all the edges of the base then send it through the table saw with a high tooth plywood melamine blade but I don’t like the the thought of it cracking as I’m doing that and sending pieces flying around my shop and at me. Is there a good way to do this and are my fears justified?

-- Burn your fire for no witness


4 replies so far

View Gene Howe's profile

Gene Howe

10900 posts in 3573 days


#1 posted 08-09-2018 05:02 PM

It should pop right off. Give it a whack.

-- Gene 'The true soldier fights not because he hates what is in front of him, but because he loves what is behind him.' G. K. Chesterton

View John Smith's profile

John Smith

1368 posts in 307 days


#2 posted 08-09-2018 05:31 PM

did you make a silicone rubber mold over the original mesquite wood ?

trying to understand your process.

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-- I started out with nothing in life ~ and still have most of it left.

View willhime's profile

willhime

122 posts in 1684 days


#3 posted 08-09-2018 07:12 PM

Put the piece on 1/4” plywood. Surrounded it with melamine particle board. Screwed the bottom to all of it and the melamine to each other. Caulked the outer lower seam. Sprayed mold release. Put the wood in it. Started filling it with resin till it capped.

-- Burn your fire for no witness

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John Smith

1368 posts in 307 days


#4 posted 08-09-2018 07:50 PM

mold release on melamine should separate quite easily
I think I’ve got it now – - – you poured clear hard casting resin ??
if you can’t separate the melamine from the resin, the bandsaw may be
your only option if big hammers and pry bars don’t work. (and yes, the BS makes a mess).
I think that if you can get some thin pry bars in between the two, slow steady pressure should work.
also, separating the melamine plastic from the particle board with chisels is an option.
looking forward to seeing your finished project !!

-- I started out with nothing in life ~ and still have most of it left.

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