[00:00.540 --> 00:06.680] I need to put this angled t-slot in the plate I'm working on and the plate has
[00:06.680 --> 00:14.080] these counterboard holes so I drilled a 5 16 18 hole into my angle blocks my 30
[00:14.080 --> 00:19.300] degree angle blocks this bolts not in an ideal location so I'm putting a 1000
[00:19.300 --> 00:23.880] shim here and here to try to get bearing on the outside edges so that
[00:23.880 --> 00:26.400] this thing doesn't flap in the breeze out here and resonate
[00:36.780 --> 00:50.860] 452 chop cuts later 16th step over here's the t-slot cutter I was using a very
[00:50.860 --> 00:54.900] important note here is the direction that I was milling in all cases was that
[00:54.900 --> 00:59.240] the cutting forces were pushing in this direction pushing it against the block
Crash and burn Job shop setup. My Bridgeport doesn't have enough travel to do this 28" long slot. So I have to do it on the Trak Mill and it's head does not nod. I drill and tap 5/16-18 holes in my 30/60 blocks in a strategic location so the part edge rests on the jaw edge. Screw the part on with 2 socket head cap screws and indicate it in within 0.003" on both faces. The shim on each edge of the block is an attempt to get a stable seat even though the screw is so close to one edge. Chop mill the .375" slot with .0625" step over, 452 chops later it's done. Run the T slot cutter through and done. One very important point is all my passes were from right to left so the cutter forces were pushing the part against the angle block not lifting It off. When a fastener is that close to an edge and it is the only attaching force, the part has extreme mechanical advantage over the fastener.
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