Search found 390 matches

by Conrad_R_Hoffman
Sun Feb 17, 2019 2:09 pm
Forum: General Discussion
Topic: How would you make these adjacent tapers on lathe
Replies: 7
Views: 501

Re: How would you make these adjacent tapers on lathe

Fortunately it's Delrin, as you'll have to have the tool hanging out a ways.
by Conrad_R_Hoffman
Sun Jan 27, 2019 12:17 pm
Forum: General Discussion
Topic: Is Jet good quality
Replies: 14
Views: 835

Re: Is Jet good quality

You have to understand what Practical Machinist is- mostly people in commercial machine shops that have zero interest in inexpensive hobby-class machines. Their rules are pretty specific on what can and can't be discussed. I'm basically a hobbyist but usually get along OK there because I stay away f...
by Conrad_R_Hoffman
Fri Jan 25, 2019 8:25 am
Forum: Lathes
Topic: New-to-Me Logan 400
Replies: 14
Views: 1017

Re: New-to-Me Logan 400

I hate 4-bangers and only use the QC. Get the wedge type and get a bunch of cheap holders from CDCO. Get a box of new dog point screws and replace the ones that come with the holders. Set 'em up for the tools you need and go to town.
by Conrad_R_Hoffman
Thu Jan 24, 2019 4:08 pm
Forum: Lathes
Topic: New-to-Me Logan 400
Replies: 14
Views: 1017

Re: New-to-Me Logan 400

Great looking Logan!
by Conrad_R_Hoffman
Thu Jan 24, 2019 4:05 pm
Forum: Lathes
Topic: Yahoo Logan Lathe Forum??
Replies: 1
Views: 435

Re: Yahoo Logan Lathe Forum??

A lot of groups have left Yahoo and moved to groups.io
You can find the Logan stuff here- https://groups.io/g/Lathe-List
by Conrad_R_Hoffman
Fri Dec 21, 2018 3:50 pm
Forum: Lathes
Topic: Mystery Knob on Logan Lathe tailstock
Replies: 10
Views: 1321

Re: Mystery Knob on Logan Lathe tailstock

Never seen a real one; I made mine out of brass.
by Conrad_R_Hoffman
Thu Dec 20, 2018 11:18 am
Forum: General Discussion
Topic: Great way to take up time...
Replies: 10
Views: 1593

Re: Great way to take up time...

That may be the worst result of getting a surface grinder. It makes you realize how badly you need a proper tool and cutter grinder to go with it.
by Conrad_R_Hoffman
Mon Dec 17, 2018 4:02 pm
Forum: General Discussion
Topic: Great way to take up time...
Replies: 10
Views: 1593

Re: Great way to take up time...

Hey, wait until you start looking at small drill bits. I've seen some where the grind was backwards. Yes, the grinding and stoning should be perpendicular to the edge for the strongest edge. I also suggest people not use carbide paper and such to finish edges because they round the edge right where ...
by Conrad_R_Hoffman
Sun Dec 09, 2018 10:55 am
Forum: General Discussion
Topic: key type chuck with R8 mount
Replies: 16
Views: 1311

Re: key type chuck with R8 mount

Never seen such a thing, but I've been using chucks with taper mounts for decades and have never had one spin. It's probably good to blue them up before assembly to be sure the taper is exact. I think it was just a bad assembly job.
by Conrad_R_Hoffman
Thu Dec 06, 2018 7:32 pm
Forum: Milling Machines
Topic: all-thread studs for clamping
Replies: 18
Views: 2726

Re: all-thread studs for clamping

I can't imagine tightening anything to the mill table so tightly as to threaten even the worst threaded rod.
by Conrad_R_Hoffman
Wed Dec 05, 2018 3:09 pm
Forum: General Discussion
Topic: HEIGHT Gauge question
Replies: 47
Views: 4197

Re: HEIGHT Gauge question

With a magnifier (my eyes are shot) it's easy to read a good Starrett or other vernier height gauge to half a thou.
by Conrad_R_Hoffman
Tue Dec 04, 2018 9:42 pm
Forum: General Discussion
Topic: Good practice question
Replies: 21
Views: 2244

Re: Good practice question

I do a lot of unsupported work because I have to. About 6:1 is the limit, and the tool grind matters a lot. You want a sharp small radius tool that doesn't cause much deflection, with just the right amount of rake so the work doesn't chatter. And either take off more or less than you want to take, b...