Thread: Huanyang VFD pot

PD002=1 (though there might be a jumper that needs to be moved............. but I'd try PD002 first)

Stuart

Originally Posted by Stustoys

PD002=1 (though there might be a jumper that needs to be moved............. but I'd try PD002 first) Stuart

Thanks Stuart ..it now works

This is my pogo stick VFD mount . Made from gal pipe . I unscrew it and change it over to another machine, a walking VFD.

Soooooo......
Is the Hendey operational??

Originally Posted by Ueee

Soooooo......
Is the Hendey operational??

I'm having too much fun with the Harrison Ueee

I tried the vibration test , a glass of water sitting on the headstock- water is flat as a tack

You need to balance a 10c piece on edge on the saddle while you take a cut, thats the Holbrook test Harty is able to take some ridiculous huge cut and the coin doesn't move. The C10 is not so beefy, it is better for small cuts.

Originally Posted by Ueee

You need to balance a 10c piece on edge on the saddle while you take a cut, thats the Holbrook test Harty is able to take some ridiculous huge cut and the coin doesn't move. The C10 is not so beefy, it is better for small cuts.

10c pieces are for wimps Ueee If you had written " 5c piece" then I would be impressed

Your point being?
Rock steady (Medium).JPG

Michael

I tried the Threading of the 4041 3/4" 55 degrees BSW .

The threading tool goes through the 4041 like a hot knife thru butter ,. I am still not convinced this steel is very strong ?

Are you confusing hardness with strength?

Stuart

Mike, I'd suggest you need to make a cover for the back of your cross slide so that you don't get swarf always falling on your leadscrew. It will cause wear or gum things up.
As for your other thought, machinability has nothing to do with strength (or hardness).

Michael

Originally Posted by Michael G

Mike, I'd suggest you need to make a cover for the back of your cross slide so that you don't get swarf always falling on your leadscrew. It will cause wear or gum things up.
As for your other thought, machinability has nothing to do with strength (or hardness).

Michael

Yes good idea , the cover for the leadscrew

I have just started using the Harrison with its 2 hp motor .The solid feel and power of the Harrison is quite a contrast to the smaller less powerful lathes I have been using for some time and It may be a case of the larger lathe doing the job easily, rather than the steel being soft .

Strength and hardness , yes two different things .

The tensile strength of steel is directly related to hardness. Morrisman, if you would like to send me a small piece of the material in question I could do a hardness test and tell you if it's mild steel or some form of H & T alloy steel.

I find 4140 a joy to machine IF you can get the chips to break. It's hard but almost buttery, doesn't tear like black bar and finishes really nicely off the tool.