threading

I've bought a different lathe a few weeks ago and i made a TDI for my previous lathe also. I really think a TDI is great when you need to cut threads on the lathe. My lathe is a Prazimat DLZ450x180 and on both sides of the carriage are handles located. On the back a handle to change between...

Hey all, I thought I'd share a possible solution to an issue I've had a few times when needing a little extra support while turning and/or threading on the lathe. I need to make a left hand threaded lead screw and the diameter will be too small and it will be too long to remain rigid while...

I recently cut an M5x0.5 thread in salvaged mystery steel (the counterweight shaft of a junky telescope mount) using a carbide insert on my mini lathe. I could tell from the ragged chips that it wasn't cutting right. It left burrs on the threads. The part ended up fitting okay, but I'd like to...

A newbie, sorting out my new PM-1130 lathe on a 1" piece of 360 brass. It is going well, but having some problems threading. It's a 5/8-18 external thread (size is arbitrary -- just for test), threaded right to left. It fits the test nut well, but thread quality is poor and the first few threads...

I've owned this tapmatic for quite a while now and use it about twice a year when I have lots of threading to do. It is always a joy to use. This time around I have to tap about 750 x 8-32 threaded holes. For those that have not seen one in action, here you are. Shown at about 400 RPM...

Hello. Last night I spent a few hours attempting to make a captive nut. My main goals were to 1. Practice single point threading on my mini lathe 2. Hit dimensions 3. Make something for my kids. Everything was going well until I got to a point that I needed to make the threads. My target was...

I plan on building a drill press vice as my next project. I could probably buy one cheaper than making it, but I want the experience and fun of making it myself. I would like to use a 1/2"-10 Acme thread in my design. I've never cut an Acme thread before. My mini-lathe is probably not up to the...

I am pretty new to machining, although my father was a hobbyist and my stepfather was a machinist, and feel like I am learning quickly. That said, I decided I wanted to really get myself setup for success. I inherited all of my father's tools after he passed away and he had a Smithy CB-300 3-in1...

Hello everyone, I am new to the forum, I am sorry if I have posted this in the wrong section. Please could someone help me with making a thread dial indicator, the part that I am struggling with is making or getting hold of a gear that I can use on my Chester MF42-B. It has a TR20 x 4mm...

Hello all those with more experience threading on a lathe than I (probably everyone!) So the one thing I never took the time to learn or got around to was threading. Well now I have a project that needs to be threaded on the lathe so I thought I would try and learn finally. I ran my first real...

Hi Everyone! Newbie to the forum although not new to metal cutting. I'm looking for a new lathe and my search led me to Precision Matthews and then to this forum. Initially I was looking for something like the PM-1127 or PM-1228 as those sizes would be fine for my projects. But, then I...

I picked up a bench lathe (BD 812) a little while ago, and I’ve had an ongoing issue with threading that I haven’t been able to solve. When cutting the threads, it becomes immediately noticeable that the pitch isn’t quite constant, making the distance in between the threads look “wavy” or...

Hi all, I know this isn't exactly a machining question, but I'd like your point of view! I make custom metal furniture, and more and more lately, we need very consistent threaded holes. I normally tap by hand, but some projects need more consistency than I can provide. I haven't been able to...

Hi Just joined the forum today! Looks like a great place to find and give information regarding CNC and manual lathes and mills. I'm in my 2nd semester at a Technical School right now. We learned the basics of each machine. Our first project this semester is a thread bar made on the manual...

Hello hobby machinists! I've been making changewheel charts, skip the next two paragraphs if that's all you're interested in. I want to cut a 2BA thread on my ML7 because I'm finding the allen bolt which is used to engage and disengage the back-gear is turning out to be a nightmare to reach...

I had a Grizzley 12" modern lathe for a decade and could cut the most beautiful threads. I would really whirl the machine when I was cutting the threads, like 400+ RPM and I could do it all day long. Well after a life event where I had to replace my entire shop and all my equipment I ended up...

This is the instruction for the Clark company threading tool grinding fixture, to be used with surface grinder. This fixture can setup for 60 degree, and Acme threading tools

My First Pen! I made a compact, 2-piece ballpoint pen for my wife for Christmas. This was made from a brass rod and an aluminum rod on my little Sherline lathe. The pen cartridge fits in the aluminum side, with a 5mm hole about 80mm deep and a 2.5mm hole the rest of the way through. Total...

Got a really nice Geometric brand die head with an assortment of die chasers. Set up and put 1" of thread on this piece of 5/16 dia 304 quicker than I could have done by hand. The threads turned out really nice too, I'm stoked!