re: preglassing
One possible solution to the lack of chemical bonding would be to run a
length of strong (maybe glass reinforced) plastic tape around the edges
of the panels before glassing. You could pull up the tape and trim edges
with a knife to leave bare wood. I've done this myself, but I used
masking tape which wasn't strong enough for the purpose and it left
little bits to dig out from under the glass. Fortunately I only used 1
oz glass. Or at least that's my vague memory.
I haven't yet read the Duckworks article about laying plastic over the
epoxy as I'm still debating whether to spend the money on a subscription
before I get another job. However, I suspect it may not be all that much
trouble and my intuition is that it would allow you to fill the weave
with a bit less epoxy by pressing down on the highest bumps. Might save
a bit of sanding that way. Someone was talking about using
polycarbonate, but I suspect that the film on that would deteriorate
rather quickly and the underlying polycarbonate would, I suspect, stick
to epoxy at least to some extent. Something like polyethylene or
polypropylene wouldn't, and might be quite a bit cheaper too. I haven't
used polyester "film?, tho. I wonder if it needs to be waxed? BTW, when
we're talking .020" or more, when do we start calling it sheet instead
of film?
Lincoln Ross
length of strong (maybe glass reinforced) plastic tape around the edges
of the panels before glassing. You could pull up the tape and trim edges
with a knife to leave bare wood. I've done this myself, but I used
masking tape which wasn't strong enough for the purpose and it left
little bits to dig out from under the glass. Fortunately I only used 1
oz glass. Or at least that's my vague memory.
I haven't yet read the Duckworks article about laying plastic over the
epoxy as I'm still debating whether to spend the money on a subscription
before I get another job. However, I suspect it may not be all that much
trouble and my intuition is that it would allow you to fill the weave
with a bit less epoxy by pressing down on the highest bumps. Might save
a bit of sanding that way. Someone was talking about using
polycarbonate, but I suspect that the film on that would deteriorate
rather quickly and the underlying polycarbonate would, I suspect, stick
to epoxy at least to some extent. Something like polyethylene or
polypropylene wouldn't, and might be quite a bit cheaper too. I haven't
used polyester "film?, tho. I wonder if it needs to be waxed? BTW, when
we're talking .020" or more, when do we start calling it sheet instead
of film?
Lincoln Ross
Lincoln Ross wrote:
piece. It's important to slice the cloth edge and pull the tape while the epoxy is green.
Rick-
> One possible solution to the lack of chemical bonding would be to run aI've used the 2" wide clear tape used in mailing packaged. The better brands pull up in one
> length of strong (maybe glass reinforced) plastic tape around the edges
> of the panels before glassing. You could pull up the tape and trim edges
> with a knife to leave bare wood.
piece. It's important to slice the cloth edge and pull the tape while the epoxy is green.
> I I haven'tI always worry about waxed anything (or siliconed anything) around stuff needing epoxy.
> used polyester "film?, tho. I wonder if it needs to be waxed?
> BTW, whenI'm assuming the thickness .03" of the sheet "film" is key to success.
> we're talking .020" or more, when do we start calling it sheet instead
> of film?
Rick-