Search found 1852 matches

by pete
Sun May 24, 2020 3:07 pm
Forum: Milling Machines
Topic: Fly Cutter Problems
Replies: 4
Views: 177

Re: Fly Cutter Problems

Maybe a few combined issues from what I see Glenn. Not one of the better grades of steel that are known for producing easy to get good surface finishes since it looks like the surface is showing some tearing. 1018? And what you already know an obvious tram issue if your getting a step at each pass. ...
by pete
Sun May 24, 2020 1:14 pm
Forum: Lathes
Topic: 4 Jaw Scroll Chucks
Replies: 4
Views: 132

Re: 4 Jaw Scroll Chucks

Fwiw the problem may not totally be the chucks fault. I've got a pretty decent Emco made 4 jaw scroll chuck that's quite accurate. And even with cold roll square stock it will sometimes need a shim. While I've not read it specifically said about 4 jaw scroll chucks, I'm fairly sure there meant mostl...
by pete
Sun May 24, 2020 12:40 pm
Forum: General Discussion
Topic: trepanning, or how to bore a 4" hole on a lathe without boring a 4" hole
Replies: 4
Views: 212

Re: trepanning, or how to bore a 4" hole on a lathe without boring a 4" hole

Interesting video and I hadn't known the HP requirements were as high as they are for that operation. I'd watched a few of this guys videos so knew about large deep hole trepanning https://www.youtube.com/watch?v=-ZPvfoVTdqE&t=195s
by pete
Wed May 20, 2020 11:55 am
Forum: Lathes
Topic: Sound Bend 9" lathe, MT-3 to ER-40?
Replies: 12
Views: 381

Re: Sound Bend 9" lathe, MT-3 to ER-40?

Having to buy and use an ER 40 collet system on that length of material that still won't fit through the spindle would just be a way of providing the rotary drive to the part. The fastest, most repeatable and accurate method of doing that job would be to just center drill each end and turn the part ...
by pete
Sun May 17, 2020 5:46 pm
Forum: General Discussion
Topic: Walter Rotary Table
Replies: 44
Views: 5619

Re: Walter Rotary Table

Yep Stefan has a way of thinking through any issues and coming up with excellent solutions. I'm the same and almost always learn something new from him. I'd rate him as being well within the top 5 on YT for practical knowledge and machining skills for sure.It would have been a very long and tedious ...
by pete
Sat May 16, 2020 8:32 pm
Forum: General Discussion
Topic: History/Info wanted ???
Replies: 1
Views: 273

Re: History/Info wanted ???

This won't help much, but afaik SPI has for at least the 20 or more years farmed out all of there products to various manufacturers and sometimes using more than one manufacturer for the same item and during the same time period. Without further manufacturer identification on those angle blocks it's...
by pete
Sat May 16, 2020 7:35 pm
Forum: General Discussion
Topic: Walter Rotary Table
Replies: 44
Views: 5619

Re: Walter Rotary Table

Nicely done!!! and thanks for the update Ted. I'd also forgotten about this thread and in the meantime picked up a bit more information about Walter. If you haven't already watched this? https://www.youtube.com/watch?v=xXNsR9X1XQk. Yes it's about the Walter universal dividing heads and not there rot...
by pete
Fri May 15, 2020 11:12 pm
Forum: Milling Machines
Topic: Mill tooling
Replies: 48
Views: 5405

Re: Mill tooling

There's probably no one single tool holding method in an R8 mill that works well for everything. In one way or another whatever is chosen is going to be a trade off in one or more ways against something else depending on the work requirements and it's tool access. Proper R8 collets will get the tool...
by pete
Mon May 11, 2020 12:26 pm
Forum: General Discussion
Topic: Starrett combination squares
Replies: 9
Views: 553

Re: Starrett combination squares

The hardened head for durability reasons. Although if there looked after as they should be either is a lifetime tool.
by pete
Sun May 10, 2020 11:33 pm
Forum: 3-in-1 Metalworking Machines
Topic: new to metalworking!
Replies: 5
Views: 1050

Re: new to metalworking!

Since I don't know the exact answer as to what chuck would directly fit that lathe I'm not sure how much this might help. If your lathes spindle nose and it's chuck mounting design is common enough then in simple general terms lathe spindle chucks are made in two different ways. A direct mount where...
by pete
Sun May 10, 2020 7:03 pm
Forum: Milling Machines
Topic: Lead screws
Replies: 8
Views: 619

Re: Lead screws

While technically using the term lead screw is correct in general conversation it's a hindrance when searching for replacements. So instead try running a Google search using Feed Screw Manufacturer's or even Motion Control added to that and you'll find what your looking for with a lot more hits. And...
by pete
Sun May 10, 2020 5:04 pm
Forum: Milling Machines
Topic: Dros for mini mills
Replies: 7
Views: 2521

Re: Dros for mini mills

Good points also. There's gains and trade offs with pretty much anything were adding to our shops I guess.