Ripping Slightly Cupped 8/4 boards with TS55

RobNJ

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May 1, 2014
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Hello - I have  bunch of 8/4 soft maple in widths from 8-11" that I'm using to build a workbench.  My jointer is only 8", so my plan is to rip it into 4-5" pieces and then joint it, since I only need 4" widths for the project (7-8' long). The only complicating factor is there is a slight cup to the boards.  Maybe 1/4" at the absolute max, with most of them less than that.

So my question is whether I can set up the TS55 to safely do that rip with a panther blade.
1) Do I make the cut with the concave side up or down?  One pass or two?
2) Should I try to take out some of the cup with a jointer plane/rotex/thickness planer or is that just a waste of time for that degree of cup.
3) Do i need to insert wedges along the way to keep the wood from pinching the kerf or is the splitter in the TS55 enough?

Any other advice I should know to make things a bit easier and safer while maximizing yield from the wood?
Thanks!
 
Concave up.

Single pass rip with the Panther.

I would not bother with wedges.

Joint one face, square the edges off this face, plane to final thickness.

Clamping the rail will help stabilize the assembly while cutting.

Tom

 
tjbnwi said:
Concave up.

Single pass rip with the Panther.

I would not bother with wedges.

Joint one face, square the edges off this face, plane to final thickness.

Clamping the rail will help stabilize the assembly while cutting.

Tom

Thanks Tom!  That makes sense and will be helpful.
Incidentally, how much cup on a piece of 8" 8/4 do you think would be too much and would require me to hit it with the jointer plan first?
 
As long as I can get the rail on the piece and keep it from moving I'd cut it (then again some think I'm crazy for some of the things I'll do). To me it is no different than setting the rail on a flat board and cutting a bevel.

Tom
 
tjbnwi said:
As long as I can get the rail on the piece and keep it from moving I'd cut it (then again some think I'm crazy for some of the things I'll do). To me it is no different than setting the rail on a flat board and cutting a bevel.

Tom

Like a fox, Tom. Like a fox. [cool]
 
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