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I'm new to scroll sawing but it's fun. I have patterns for fairly
intricate Christmas Ornaments. I bought a 1/4" piece of Birch plywood
at Home Depot, It looks like it's 3 ply, plus a birch "skin" on each
side. I'm using a pretty fine tooth, and thin blade at about 600rpm. In
several areas, the thin birch vineer skin has broken away in between
some of the tiny cut sections. Am I using the wrong type of plywood? If I use a solid wood stock, I would think the the fragile ornament
piece would easily break. Any suggestions? |
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-Try using #2 reverse tooth blade it's the blade I use most often. I use
birch plywood often in my scroll saw projects and never had much problem
with it. I have found that soild wood 1/4" thick tends to warp over time -How much clearance is there around your blade? If there isn't enough
support underneath and you are doing fine work, that can cause it to break.
If you have the usual metal insert there is probably a pretty fair sized gap
between the blade and the metal insert. Take a piece of ply and drill a
small hole in the center. Feed the wood into the blade to this hole then
turn it around so the kerf is in the front. You just made a zero clearance
table. You will need to mount this somehow so it doesn't move around.
Double stick tape. My saw included a plastic insert in place of the metal
insert. -Try cutting the center section first and then cut toward the outer edges. This
method leaves wood for support of delicate internal details. As mentioned
baltic and Finish birch have 5 layers insted of three. Also the plys are
thicker and there are no voids. Sometimes baltic birch scraps are available
from cabinet makers large enough for ornaments at minimal if any cost. |
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