How to Use an ACME Thread Gage - Viewer Question Answered
ฝัง
- เผยแพร่เมื่อ 15 ส.ค. 2021
- Wanna grind a tool to cut ACME threads? You're in the right place! Are you a confused coyote trying to catch a road runner? Sorry buddy. Keep looking... out for falling safes.
If you like my videos, please consider supporting my channel on Patreon. You'll get access to gag reels and I'll give you a shout out in my videos.
/ stuartdeharo
Thank You for both videos. Great info I did not know. Now on with the multi-start threads.
It was just what I needed this short video while exercising in making special acme threads.
Excellent video
fron The Netherlands
Luc Bleckmann a novice in practical machining
Definitely some of the best machinist handsplaining on the TH-cam 👍😂👍. Thank you for another top-notch concise demonstration.
Excellent video, and very informative. I hadn't seen one of those tools before. Very cool. It certainly took a lot of the mystery out of acme threads for me.
You make really good videos. Thanks for taking the time to share your knowledge
Nicely done guide on the use of the ACME gauge. Now, if you could just find one that allows me to hand grind perfectly straight and accurate angles on a piece of tool steel using a bench grinder I would appreciate it greatly. LOL!
Just received one of these thread gages in a tool lot. You answered my questions. Thank you fir sharing your knowledge.
Hey. I'm glad it helped. Let me know if you have any other questions.
@@StuartdeHaro I’ll have to get back with ya. Just moved and waiting to buy a house. Mills and lathe in storage 🥺
@@bigmikeh5827 I know exactly what you mean. I moved a few months ago and have been in a holding pattern while waiting for the concrete floor to be redone. It's going to eventually be a great shop though.
@@StuartdeHaro that’s good news. I’ve got tons of projects in line. New to area and no friends made yet.
@@bigmikeh5827 Check out some of the machinist forums like homeshopmachinist and practical machinist, as well as the r/machinists subreddit and inquire about clubs or meetups in your area. Depending on where you are in the world, you may be spoiled for choice or the only machinist within a day's drive, so your mileage will definitely vary.
Good to know info, thanks.
Thanks!
Thank you very much for the Superthanks! I really appreciate it!
Fantastic
👍
Nice video sir
Another tool I need to get.
Cheers
There's always another.
Handsplained, LOL!😂
Is the college open so that I can get my tools back out of the locker they've been in for a year and a half now.
Postscript:. Cool vid! If I had managed to get my class project done at all I had been planning on making a set of Machinist's screw jacks with acme threading.
I don't know if it is now, but it will be starting next week.
@@StuartdeHaro cool beans. Hopefully I can get the bucks together to re-enroll!
More good content! Philosophy on compound angle? I know you used 0 degrees on the double start project - presumably to allow for movement to cut the second thread. Do you ever use the popular 29.5, or similar angle, to cut with the leading edge of the tool?
I usually angle the compound. That puts a lot less tool in contact with the work piece so it is less apt to chatter. That said, sometimes it's just more convenient to plunge straight in, like when you're cutting threads on a lot of identical parts. Plunging straight in lets you take note of the thread depth on the first part and go to the same depth on subsequent parts. You still want to measure of course since the tool will wear down, but it gets you in the ballpark quickly.
I think you use 14 1/2° for acme threading :) although our video producer here would know better than me.
@@crbielert That is correct. You angle the compound to half the angle of the thread form.
Great! I did an acme thread for a project but can’t remember what it was. Not sure what angle I used. Thanks for the great stuff, guys!
Good video. Thanks
When I try to single point thread on mild steel it will start out okay but then it will tear the threads and literally make then useless and ruin the piece. Can you tell me what I am doing wrong? I have tried different speeds, depths of cut, and a whole plethora of cutting oils to no avail.
Without seeing it in action it's hard to say, but a really common error is taking the same depth of cut for every pass. You might start with .010 to .015" but each successive cut short be a little less. The last pass will be .001 to .002". Reason is there is more and more tool in contact with the work so it is more likely to chatter or dig in with a heavy cut.
@@StuartdeHaro Thank you. I will give it a try.
@@oh8wingman let me know if it helps.
Stewart, would I grind an inside tool the same?
You sure would. The only difference would be the need to fit it in a boring bar.
I suck at grinding cutting tools. I would like a jig I can drop on the surface grinder that would cut Acme and 60degree tools for me with ease. Seen one out there?
We have a jig in a cabinet at work that I run across every couple of years. If I remember, I'll snap a picture of it tomorrow.
I suck at hand grinding cutting tools too. A tool makers vice and a couple of angle blocks is all you would need if you already have a surface grinder. I'm in the opposite boat. Have the vise and angle blocks but no surface grinder.
@@StuartdeHaro Thanks! I'd like to see it! I swear I can only learn so many skills, some times you just need it DONE or easy. I flat out refuse to learn to grind tools on a bench grinder. Kinda like sharpening drill bits. I said fck it and bought the most expensive drill doctor. After making peace with that piece of shit, I can sharpen bits half drunk!
@@jagboy69 I got a drill doctor for Christmas years ago and I never could make that piece of shit work right. I can usually make it work just well enough to postpone a trip to the hardware store for a new bit, so I haven't thrown it away yet.
@@netpackrat Guy at my local sharpening shop gave some pointers. #1 The expensive one is the only one to buy. #2 Throw away drill bits that are smaller than a 1/4". Don't try sharpening them on the DD. #3 Getting them in the holder is critical. Be sure you adjust the depth stop or you will be grinding all day on it. #4 The diamond wheel in it works better after it's sharpened half a dozen bits. #5 Save your receipt, you will either make peace with it after putzing with it for a couple of hours or give it back to the store. You'll either love it or hate it. I garagesaled the first blue one I had and decided to give it one more chance. I'm glad I did, but I agree, it's not for everyone and I still call mine a piece a shit. lol...