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Goldstar31, you can do this to get started. This is on a mini-lathe but no reason it won't work on a larger lathe. Uses a piece of trued-up angle plate to mount the compound slide vertically and attaching a bolt plate and/or small angle plate to hold the work. Complete details in the Jan/Feb...

There is LibreCad....(https://librecad.org/) free and will run on any operating system. It's not my personal favorite, though. I use "TurbocadLE" which is a free download of a very old version of Turbocad (and I do mean VERY old....circa 1995). It will run flawlessly on my Linux system, though...

My crucibles are silicon carbide, I've had them for years. Nothing wrong with graphite/clay, though. The size number designates the capacity of aluminum in lbs., so the # 8 will do 8 lbs (note...not kgs) of aluminum or 24 lbs of bronze. 24 kg (52 lbs) is a BIG crucible, what are you making? I...

Actually, the furnace described above is my "old" furnace. I am now using a new one which looks pretty much like a trash can (Photo). It uses two burners from a BBQ. Much less output but better insulated using home made refractory (1 part clay, 4 parts perlite). It is much safer, less a thing...

I am using a purchased crucible, either #A6 or #A8 size. The furnace can be seen here: https://saskatoonmodelengineers.webs.com/ (another photo on the "photos" page. #60 drill bit is .040" dia, mine is twice that (3/32") so 4 times the flow area. What it your propane pressure? I used a big...

I have melted cast iron with a home made propane burner........very simple with just a forced air fan and a propane jet, manually adjust the air/fuel mixture. Furnace was a metal pail lined with firebrick. Burner was big enough to completely surround the crucible with flame. It can be done, the...

I wrote an article on making piston rings in Home Shop Machinist magazine Vol. 37 No. 1 Jan-Feb 2018 (available as a reprint from http://www.homeshopmachinist.net/). Basically I manually lap the sides similar to what Foktry was doing before making the lapping machine but I also lap the outside...

That is amazing work. Almost makes me want to set up CNC......but I'm having too much fun making mistakes and scrapping parts "the old way".

This thread is a bit old but I have to add my nickel's worth.... There is a series in Home Shop Machinist magazine (http://www.homeshopmachinist.net/home) on upgrading the mini lathe. Article 1 (Sept/Oct 2012) shows a quick and easy leadscrew dial (see photo). Article 8 details a carriage...

OK, I will amend that.... WD-40 is not designed to be a cutting fluid. It was originally formulated to repel water and prevent corrosion and owes it's popularity to really good marketing not to any outstanding abilities. Yes, almost any fluid will serve as a "cutting fluid" to some extent but...

For high speed machine work like drilling where the primary need is to cool the work, use a soluble oil which should be available from any machine tool supplier. For heavy cutting or threading where the primary need is to make the tool cut easier and not tear the work, use a sulferized cutting...

Gus, I have sent you a private message.......

$25 for the set!!! Wow. Best price I can find is $136 on ebay. If I could get them for that price maybe I would..... No, probably I wouldn't. I just like "made it myself" too much.....like the flycutter cutting the gear in the photo of my dividing head above.

Nice gearbox, Stub Mandrel. What's it for? How did you make the splines?

There is also an excellent "poor mans" dividing head design in the June/July 2010 issue of Machinist Workshop magazine. It is called the "Modular Dividning Head" because various accessories can be added to it. A worm indexing module is featured in the Oct/Nov 2010 issue of the same magazine. I...

What lathe? http://mikesworkshop.weebly.com/change-gear-pressure-angle.html has determined that the plastic gears on the mini lathe are module 1, 20 degree pressure angle. His website also has some info on making your own gear cutters and I have cut these gears using a home made flycutter.

Sharp tool with a squared off tip set truly on center height, slow speed and flooded with cutting fluid (soluble oil). The clue is that you are welding material to the tool tip.....means too much heat is being generated. Flood with coolant which will also help wash out the chips. I use soluble...