Search found 2627 matches

by ctwo
Fri Sep 21, 2018 10:19 pm
Forum: General Discussion
Topic: Tightening a chuck
Replies: 7
Views: 194

Re: Tightening a chuck

I've never considered much the compression of the opposite jaw. Just as with torquing bolts, I feel it at the lever. But we know, real torque is measured as bolt stretch (or compression?) over some distance. My small chucks seem compressible over a few though at most, but that is very subjective. I ...
by ctwo
Thu Sep 20, 2018 6:42 pm
Forum: General Discussion
Topic: Gage blocks
Replies: 54
Views: 1629

Re: Gage blocks

That tool has a broad application. My first thought is to make one.
by ctwo
Thu Sep 20, 2018 6:38 pm
Forum: General Discussion
Topic: index head
Replies: 30
Views: 998

Re: index head

How did I miss this? Only 8 left on that auction.
by ctwo
Thu Sep 20, 2018 4:12 pm
Forum: General Discussion
Topic: Gage blocks
Replies: 54
Views: 1629

Re: Gage blocks

Harold_V wrote:
Thu Sep 20, 2018 3:20 pm
I'm not smart enough to even understand your method. :cry:

H
Perhaps because the illustrations are on the previous page of the topic and you did not see them? It is quite simple, and that is about all I could come up with. The next step for me alone would likely be simple blind faith.
by ctwo
Thu Sep 20, 2018 2:59 pm
Forum: General Discussion
Topic: oilless compressors
Replies: 10
Views: 262

Re: oilless compressors

My oiless compressor is the absolute loudest machine tool I have. It gets very hot too. I don't like it.

https://www.youtube.com/watch?v=oKqB_p30DHU
by ctwo
Thu Sep 20, 2018 2:53 pm
Forum: General Discussion
Topic: Gage blocks
Replies: 54
Views: 1629

Re: Gage blocks

To add to your errors? I recently found out from a Mitutoyo video that gauge blocks can change up to 1 micron per inch per year. No explanation was given for why that happens only that it can. For what ever reason, folks seem to think of metals as being stable--benign---unchanging. Nothing could be...
by ctwo
Thu Sep 20, 2018 2:50 pm
Forum: General Discussion
Topic: Gage blocks
Replies: 54
Views: 1629

Re: Gage blocks

If you're wondering about the odd length of time, the speed of light is 299,792,458 meters per second so, in the indicated time interval it would travel exactly one meter. Of the three essential elements of a measuring system, distance, time and mass, only mass still employs a physical standard, cu...
by ctwo
Wed Sep 19, 2018 2:34 pm
Forum: Home Shop CNC
Topic: Thread Milling
Replies: 20
Views: 868

Re: Thread Milling

I could not figure it out because the tool would follow most of the initial small arc, but get closer to the edge and finally cross before it got to the large arc. Then, it fully reversed direction to pick up the large arc where it would cross at the left side...here is a figure I recreated from mem...
by ctwo
Wed Sep 19, 2018 8:16 am
Forum: Home Shop CNC
Topic: Thread Milling
Replies: 20
Views: 868

Re: Thread Milling

If I recall, I think I had to put the repetitious code in a subroutine and call that. Have to look it up. Mach was doing some strange things with cutter comp until I added a Y motion. I never tried that feature before so need to look into it. I might actually try cutting some threads before January ...
by ctwo
Wed Sep 19, 2018 3:22 am
Forum: Home Shop CNC
Topic: Thread Milling
Replies: 20
Views: 868

Re: Thread Milling

Ha, yes, D1 seems to solve one error message. Maybe I don't understand it well enough, of course. Mach does not seem to repeat the arc in the program, but I recall the machine does. % O1000 (X0Y0 is at center of hole) (Z0 is at the top of the part) T1 M06 G00 G90 G54 X0 Y0 S2500 M03 G43 H01 Z0.1 M08...
by ctwo
Wed Sep 19, 2018 12:51 am
Forum: General Discussion
Topic: Gage blocks
Replies: 54
Views: 1629

Re: Gage blocks

I was comparing my Polish and Shars blocks directly and convinced myself that the needle width on my finest 10ths dial indicator (old Fowler) is 100 millionths. I further convinced myself that I could see near half a needle width difference between a -11 and +23 blocks. That would be amazing. For th...
by ctwo
Tue Sep 18, 2018 11:29 pm
Forum: General Discussion
Topic: Oilers
Replies: 2
Views: 146

Re: Oilers

I filled mine half way with way oil and pumped it a few times. Then I wiped it clean and set it on a box overnight - and the box had soaked up a large stain. I wiped the can clean and set it on another box and it soaked up a large stain again, so I assume it's leaking from the bottom seam of the can...