Search found 17170 matches

by Harold_V
Tue Jun 18, 2019 1:34 am
Forum: Milling Machines
Topic: Help With Milling Problem
Replies: 1
Views: 73

Re: Help With Milling Problem

In a recent project I had to modify a couple of flex sockets for use in the setup. What I learned is that they are surface hardened, and will cut if you can get beneath the skin. I'm not suggesting that yours will be the same, but they may be. Does this lend itself to grinding? If so, you might cons...
by Harold_V
Mon Jun 17, 2019 4:11 pm
Forum: Lathes
Topic: Newbie - Buying first metal lathe
Replies: 50
Views: 906

Re: Newbie - Buying first metal lathe

I don't use HSS much. If carbide was letting me down, I would. How do you know? Without a little experience with how both cut, you may find you're "settling" for the results you achieve, when there may be better conditions. One of the comments I found interesting (not by you) was the hit or miss wh...
by Harold_V
Mon Jun 17, 2019 4:00 pm
Forum: Lathes
Topic: Newbie - Buying first metal lathe
Replies: 50
Views: 906

Re: Newbie - Buying first metal lathe

In regards to "free hand" grinding, I use no rest at all. My tool grinder has nothing more than the shroud around the wheel. Otherwise you're too limited. Grinding the way I do takes a little practice, and a true running wheel, which becomes the guide. You must have the ability to see the tool in yo...
by Harold_V
Mon Jun 17, 2019 3:46 pm
Forum: Lathes
Topic: QC toolpost for Atlas 618
Replies: 16
Views: 397

Re: QC toolpost for Atlas 618

2 minutes to make a part with QCTP vs. less than 30 seconds with the turret. That's impressive! Unfortunately, the job presented other problems that could not be overcome without some creativity. 3000 parts to make and I learned just how much plastic can move when being machined. Oh, yeah! In fact,...
by Harold_V
Mon Jun 17, 2019 3:15 am
Forum: General Discussion
Topic: Turning plastic on a metal lathe
Replies: 16
Views: 320

Re: Turning plastic on a metal lathe

Always happy to hear of real life experiences. Yours was a very interesting report. Your comments are Information I will file in my head for future recommendations.

Thanks! :wink:

H
by Harold_V
Mon Jun 17, 2019 2:01 am
Forum: Lathes
Topic: Newbie - Buying first metal lathe
Replies: 50
Views: 906

Re: Newbie - Buying first metal lathe

I fully endorse the use of carbide as mentioned in the last two posts, as indications are that they are used as they should be. I hope readers understand that my comments are directed towards folks with light duty machines, machines that rarely have the necessary power and rigidity to benefit from t...
by Harold_V
Sun Jun 16, 2019 3:36 pm
Forum: General Discussion
Topic: Turning plastic on a metal lathe
Replies: 16
Views: 320

Re: Turning plastic on a metal lathe

One plastic to be careful when machining: PVC. It can off-gas chlorine which will quickly rust any exposed metal surfaces. I always prep the machines by applying a coating of oil for protection. It wipes clean when the job in done. ~RN Interesting observation. I've machined it numerous times (both ...
by Harold_V
Sun Jun 16, 2019 3:32 pm
Forum: Lathes
Topic: Newbie - Buying first metal lathe
Replies: 50
Views: 906

Re: Newbie - Buying first metal lathe

I'm of the opinion that modern carbide is drastically improved, of that there is no doubt. When it was in its infancy, it was almost unusable because of it being so fragile. That said, the problem with carbide still remains when it is applied to low powered and light duty machines. Sure, it's a litt...
by Harold_V
Sun Jun 16, 2019 3:18 pm
Forum: The Junk Drawer
Topic: Best Ceiling Fan Buying Guide
Replies: 7
Views: 252

Re: Best Ceiling Fan Buying Guide

I'm sorry to say that I DID miss the link, and I thank you for bringing it to my attention.

The link will be removed, and the individual removed from the board. I will leave the thread intact, as a reminder to those who come here to spam the board that it is a waste of their time.

H
by Harold_V
Sun Jun 16, 2019 4:14 am
Forum: General Discussion
Topic: Turning plastic on a metal lathe
Replies: 16
Views: 320

Re: Turning plastic on a metal lathe

I am unaware of any of the common plastics that might be detrimental when being machined. Glass filled materials are an exception. They do offer considerable abrasion of precision surfaces, to say nothing of the uncomfortable itching of working with glass fibers. One of the worst parts I ever machin...
by Harold_V
Sun Jun 16, 2019 1:57 am
Forum: Lathes
Topic: Newbie - Buying first metal lathe
Replies: 50
Views: 906

Re: Newbie - Buying first metal lathe

I did fall into the trap of carbide inserts but managed to wiggle free. That's an interesting comment, one that needs to be read and understood. Those who have the intestinal fortitude to read my ravings are all too familiar with my admonition to avoid that trap. Not doing so robs an individual fro...
by Harold_V
Sun Jun 16, 2019 1:47 am
Forum: The Junk Drawer
Topic: Best Ceiling Fan Buying Guide
Replies: 7
Views: 252

Re: Best Ceiling Fan Buying Guide

He's still on the board because he's not advertising a given product. Note that he didn't promote anything? If he knows of what he speaks, he may have offered some acceptable guidance for those in the market. I'm not qualified to say. I am qualified to say that this post was moved to the junk drawer...