> Was there some discussion about sandwiching the > multilam between a delignit top and bottom? I didn't > find it if there was. Bob, I think it was mentioned, but not considered to be necessary. > Since the delignit provides excellent pin support at > the top with it's density, and the pin tilt change > possibility would effect both ends of the pin, > wouldn't a similar density to support the bottom of > the pin be desirable? If the bottom of the pin actually reaches the dense layer, I wouldn't, unless you like jumpy pins. Why not just use a Delignit block? Incidentally, there is very little stress on the bottom of the pin. It's concentrated at the top of the block. > It seems like this might balance the structure of the > block and maybe prevent the warping - or make it > worse?? It might prevent warping. I don't see how it could make it worse. > Our first capped block turned out with the torque to > high. Our second, with same size bits (1/4 and > 17/64) turned out too low - 100 or less inch pounds. > We didn't use that block. We experimented with > different bits before the next block. The 1/4 and > 17/64 seemed a little to tight with 170 to 180 torque. > So we used 1/4 and H on the next block - but the > actual work didn't yeild results consistent with the > experimentation. We have only fair results with this > one with 120 - 140 torque but some lower. I told > Richard to do more coil and becket work while the pin > is higher out of the block rather than driving it down > too close and working the pin back and forth. Bought > a new drill press too since the other seemed to have > wobble up in the quill. > Still I'm not real satisfied. This, I don't understand. I've gotten extraordinary uniformity with these blocks and double drilling, and I'm doing the second pass at 6.8mm, which is 0.2677", or 0.002" bigger than the 17/64. I've not had one end up anywhere near loose. They've all been very tight, probably too tight for some tastes, but even tight, they're very controllable. That SD-10 was drilled at 6.8mm, with 2/0 x 2 3/8" pins, and was very characteristic of how my blocks feel. What did you think of that one? > One thing I think we remembered that probably made > that first block come out so tight was that we had to > make plate bushings for that one. These were made > from oak and were really tight for the pin. Probably > contributed to the higher torque. > > Bob Mine are somewhere in that range normally, without bushings. Again, I don't understand. Ron N
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