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I have a couple double-ended edge finders. I must be doing something wrong, they're difficult to extract from the collet after use. So take my 1/2 edgefinder (a Starrett). I put it in the 1/2 collet with the .200 end of the edge finder down, use it, then upon removal, the .500 end hangs in the...

Just received my first boring head, 2" capacity on an R-8 collet for use in my small mill. Also a set of Cobalt boring bars. Will be boring aluminum that's 1/2" - 1" thick. I could use a little help. As I was assembling the boring head, I realized (for the first time) the boring bar itself...

Is there a rule of thumb regarding how much metal should be left adjacent to a threaded hole? Let's say I have a piece of steel that's .250 in one dimension, for example. Is it OK to tap it for a #12 screw, major diameter being .216? That leaves just .017 of metal on either side, so I would not...

I'm a new owner of a 6" rotary table, it has 4 T-slots in it. While I haven't used it much, I have been wishing I had a way of quickly centering my work by way of an indexing pin (sticking up) or a bolt (going down) into the center of the rotab. But the center of the rotab is just a 2MT hole...

My mill's 5/8-capacity drill chuck is mounted on an R-8 to JT6 arbor that requires lots of Z-axis movement whenever I switch from milling to drilling. That's a pain on a Sieg X-3 which has a geared-down Z-axis. Lots of cranking. What I would really like, is a nice, medium-small 3/8"-capacity...

Recently joined SCHSM (So Cal Home Shop Machinists), and learned about this site via their links and through Mklotz' postings. I have a small mill (Sieg X3), a belt grinder, and am shopping for a benchtop lathe. I look forward to learning from y'all. :bow: