Search found 2021 matches

by Mr Ron
Fri Nov 26, 2021 2:57 pm
Forum: General Discussion
Topic: A topic for Glenn or Harold re: metrics
Replies: 107
Views: 14383

Re: A topic for Glenn or Harold re: metrics

Although this is an old post, I have to agree with Harold as it has to do with "sense of size". I can visualize a length in imperial, but not in metric without actually converting. I can visualize .625", 9.500" or 4'-9", but 2.5 mm, or 58mm, no way without converting. Converting only adds another po...
by Mr Ron
Tue Nov 02, 2021 12:06 pm
Forum: General Discussion
Topic: Drilling small holes with a vertical mill
Replies: 12
Views: 1429

Re: Drilling small holes with a vertical mill

whateg0 wrote:
Wed Oct 27, 2021 11:27 am
Bill Shields wrote:
Wed Oct 27, 2021 5:26 am
Define small...
If op is going to use a 15, then less than 1.5mm. granted, there's a big difference between 1/16" and 0.025"!
I don't know where the "15" came from? I mean to use an Albrecht chuck that will go down to a #80 drill.
by Mr Ron
Sun Oct 31, 2021 3:36 pm
Forum: General Discussion
Topic: Sensitive drill
Replies: 8
Views: 897

Re: Sensitive drill

Thank you all for your response. I've ordered a set of pin vises and will see where I go after this.
by Mr Ron
Sat Oct 30, 2021 7:29 pm
Forum: General Discussion
Topic: Sensitive drill
Replies: 8
Views: 897

Re: Sensitive drill

The sensitive drill feed with the knurled wheel start about $38. US and go up, on eBay. One shank has a slot, the other a dowel. The knurled wheel has a ball bearing. The cheap ones are not very good quality. They're not hard to make and you can control the clearance etc. That's what I intended to ...
by Mr Ron
Sat Oct 30, 2021 9:59 am
Forum: General Discussion
Topic: Sensitive drill
Replies: 8
Views: 897

Re: Sensitive drill

I just realized a sensitive drill won't work with a vertical mill, as the chuck has to turn via the small pin wheel.
by Mr Ron
Fri Oct 29, 2021 10:57 am
Forum: General Discussion
Topic: Sensitive drill
Replies: 8
Views: 897

Sensitive drill

I wanted to buy a sensitive drill that can go down to a #80 drill bit, but they cost around $300-$500. I was thinking I could use a pin vise and modify it to fit inside a tight fitting tube with a large thumb wheel and chuck it in the tail stock. Question is: do you think a good quality pin vise, li...
by Mr Ron
Wed Oct 27, 2021 1:10 pm
Forum: General Discussion
Topic: Drilling small holes with a vertical mill
Replies: 12
Views: 1429

Re: Drilling small holes with a vertical mill

Thanks all. I need to get a small Albrecht chuck and make a sliding adapter.
by Mr Ron
Tue Oct 26, 2021 4:08 pm
Forum: General Discussion
Topic: Drilling small holes with a vertical mill
Replies: 12
Views: 1429

Drilling small holes with a vertical mill

What would be the best way to drill number size holes on a vertical mil?. I'm thinking an R-8 collet, holding an Albrecht15 keyless chuck with an adapter. Would this give me a rigid setup to minimize drill breakage? https://www.penntoolco.com/royal-products-micro-drill-adapter-with-albrecht-keyless-...
by Mr Ron
Sun Oct 24, 2021 2:10 pm
Forum: General Discussion
Topic: Boring a bearing journal vrs reaming
Replies: 26
Views: 2830

Re: Boring a bearing journal vrs reaming

**Edit** - I just thought of a question! Is it possible to leave the tail stock lock open and push the tail stock by hand when reaming a .625" hole? I'm wondering if it would sort of float the same way a floating reamer would? That is how I was taught in school to ream on a lathe. The purpose was t...
by Mr Ron
Sat Oct 16, 2021 10:14 am
Forum: General Discussion
Topic: Drilling small holes
Replies: 25
Views: 4712

Re: Drilling small holes

The projection was machined in steps. I roughed the length considerably oversized, then started at the end, reducing it to the desired diameter in short lengths. I repeated until the 5/8" length was achieved. Needless to say, there were minor steps in the length, but it was easy enough to spin poli...
by Mr Ron
Fri Oct 15, 2021 11:31 am
Forum: General Discussion
Topic: Drilling small holes
Replies: 25
Views: 4712

Re: Drilling small holes

Not to make little of the accomplishment, it's not all that big of a deal. Many years ago, when I operated my machines for gain, one of the tools I built for Litton Guidance & Control required six pieces of what I recall to be 5/8" diameter free machining brass with a .030" diameter extension 5/8" ...
by Mr Ron
Fri Oct 15, 2021 11:25 am
Forum: General Discussion
Topic: Boring a bearing journal vrs reaming
Replies: 26
Views: 2830

Re: Boring a bearing journal vrs reaming

No best way. It's whatever works.