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Step 8Make the Z axis
Begin by screwing (using 2" long wood screws and countersinking the holes) and gluing the 8" by 4" piece of plywood to the mill column. Make sure it is square/level relative to the mill base.
Now clamp the rails to the plywood base- use the cut Delrin slide as a spacer. Remove the Delrin slide and insert the end blocks. Slide the ACME rod through the blocks to make sure everything is lined up correctly and then drill through the holes in the rails. Insert four long bolts through the ends of the rails and secure them with nuts. Now insert a shorter bolt from the back of the plywood base through the center rail hole and secure it with a nut.
Now clamp the rails to the plywood base- use the cut Delrin slide as a spacer. Remove the Delrin slide and insert the end blocks. Slide the ACME rod through the blocks to make sure everything is lined up correctly and then drill through the holes in the rails. Insert four long bolts through the ends of the rails and secure them with nuts. Now insert a shorter bolt from the back of the plywood base through the center rail hole and secure it with a nut.
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Oct 4, 2009. 4:01 PMSparkyOR
says:
I saw a good way of fastening parts like that together. You can drill crosswise about 3/4" holes about 1-1/2 from bottom of column. drill intersecting .25" holes from bottom. Use a regular .25" nut, there are special screws in those bins at the hardware store, that have a large dia but thin head, used for furniture projects. Actually, they sell the special round pins that are threaded 1/4-20 for them (more money) The result is STRONG.
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