ie. leave the most critical dimension for the last operation.
...lew...
Search found 775 matches
- Sat Apr 24, 2021 8:21 pm
- Forum: General Discussion
- Topic: Order of Operations Question
- Replies: 15
- Views: 6884
- Tue Apr 13, 2021 9:29 am
- Forum: General Discussion
- Topic: What type of Knurl?
- Replies: 10
- Views: 5526
Re: What type of Knurl?
Forget the "formula" just use a scissor type holder and crank the pressure till they track.
...lew...
...lew...
- Sat Mar 06, 2021 10:32 am
- Forum: General Discussion
- Topic: Magnetic gears?
- Replies: 12
- Views: 6951
Re: Magnetic gears?
What can you expect from the last two generations of "News" people. The education system has abandoned "education" for "feel good" in the classrooms.
...lew...
...lew...
- Tue Jan 19, 2021 9:56 am
- Forum: General Discussion
- Topic: Why do I need a Variac?
- Replies: 18
- Views: 10590
Re: Why do I need a Variac?
Where are you ? I have a couple of the medium power ones in the shed. I had two big ones (one a true Variac [rtm] and the other that other Co. ) 240 /120 at 25 A that I sold just last year. They have been in the shed for the 23 years since I retired.
...lew...
...lew...
- Sat Jan 16, 2021 12:23 pm
- Forum: General Discussion
- Topic: Should I care - 6.5mm instead of 1/4" DA collet
- Replies: 8
- Views: 5589
Re: Should I care - 6.5mm instead of 1/4" DA collet
"DA" was a haircut style. The first thing that comes to mind when I see it. I really hate abbreviations that aren't accompanied by the full description the first time they appear.
...lew...
...lew...
- Sat Jan 16, 2021 12:18 pm
- Forum: General Discussion
- Topic: Boring Head Questions
- Replies: 14
- Views: 7876
Re: Boring Head Questions
Using round bars (in a pair of Vs usually) has been used a lot. At least I've made 4 or 5 tooling devices using it with good results.
...lew...
...lew...
- Fri Dec 25, 2020 10:21 am
- Forum: General Discussion
- Topic: Grounding Dust Collector???
- Replies: 11
- Views: 5868
Re: Grounding Dust Collector???
A single "wrap" between the screw is to keep it from being snagged and pulled off. A "mechanical" phenomena not electrical.
...lew...
...lew...
- Wed Dec 16, 2020 11:13 am
- Forum: General Discussion
- Topic: From belt drive to chain drive...metal bandsaw. DONE!
- Replies: 13
- Views: 6572
Re: From belt drive to chain drive...metal bandsaw. DONE!
:-) the quote, < The ship on which I served had amplidynes to control the movement of the main guns.> There is a word I haven't heard since about 1953. :-) the drive for the CPS6B radar set . A monster with 5 one megawatt transmitters and 1, 2 MW one (it was installed while I was working on it) . I ...
- Thu Dec 03, 2020 11:33 am
- Forum: General Discussion
- Topic: Band Saw Blade Brazing
- Replies: 13
- Views: 12060
Re: Band Saw Blade Brazing
Here are a couple of "devices" I built just before a new teacher caused me to depart and then the Covid crap came along when the teacher problem was finally solved , and I never got a chance to try them out in practice . :-) https://i.postimg.cc/pT1gL30p/IMG-0549.jpg https://i.postimg.cc/b...
- Sat Sep 26, 2020 9:20 am
- Forum: General Discussion
- Topic: ER Collets.
- Replies: 10
- Views: 5040
Re: ER Collets.
That video would probably very helpful IF the guy would have talked slow enough to be understood . So many people seem to be practicing to be auctioneers .
...lew...
...lew...
- Thu Jul 30, 2020 9:16 am
- Forum: General Discussion
- Topic: Duburring Raw Stock
- Replies: 14
- Views: 8381
Re: Duburring Raw Stock
When I was working as an engineer, it was standard practice for the machinists to deburr each and every surface, and I never observed them deburring raw stock for personal safety. I may have just missed it, or the company order in sufficient quantity that they could get deburred raw stock as a matt...
- Mon Jul 27, 2020 8:28 am
- Forum: General Discussion
- Topic: Has anyone built a guide for a center drill.
- Replies: 9
- Views: 6532
Re: Has anyone built a guide for a center drill.
Back in ancient times there were machines that you stuck the end of a bar into and they centered and drilled it automatically. You could make an end cap on the lathe, stepped to accept the workpiece and the center drill, and use a hand drill to make a centered hole. I did exactly that a few weeks a...