2017 POTD Thread Archive

[dave_r_1]

That first one looks like something I would weld up...of course, yours has nicer welds...

 

[Rick Berk]

If you want to practice, weld at inside 90 degree and then break it to check penetration then repeat an outside 90. Pretty is nice but penetration counts most.

 

[Ben Nevis]

I have been working on this over the last several months, still a work in progress. It is my attempt to build a Rose Engine lathe.
I used a 5C spin index, a cross slide from a Delta lathe, and the Sherline milling attachment for the cutting frame.

 

[BFHammer]

Got underway with my welding table build.

Started a thread in the welding forum

http://www.hobby-machinist.com/threads/welding-table-build.56070/

 

[Armourer]

A 6" vise is overkill for a RF45 style mill. A 4" is more appropiate for that size mill & IMO 5" max. I have a 5" GMT vise on my PM45 & it's slightly too big. Not enough Y axis travel to make use of the 5" full capacity. Better to save your money rather than getting something too big & most importantly the weight. I take my vise of the table quite often, a 6" is still light enough for me to be carried by hand but I'm glad I have a 5". I also have a 4" vise as well. I prefer the 5" though.

But those GMT 6" Premium vises are pretty nice. I'd love to have one but don't need one on my current mill. But if you plan on upgrading to a full size knee mill in the future than the 6" will be perfect.


Here's what the 5" looks like on my mill.



I couldn't even complete this cut without my bellows & DRO scale getting in the way. Not enough Y travel & the 5" vise is not even maxed out.



Here's what a 6" vise looks like on another PM45 (gt40's)
View attachment 253544

 

[bfd]

those threads look fine don't hesitate to practice on steel its not that much different. more passes. cant take as much off at once. mostly when you get close to finish size. clean up with 3 corner file and wire brush and maybe some scotchbright bill

 

[FOMOGO]

Congrats on the milestone, looks good. Mike

 

[Hukshawn]

Sticky half nuts? Shouldn't ever have a problem disengaging them.

But really nice work. Especially on aluminum. Nice clean finish.

 

[ndnchf]

I picked up this nice Baldor 1/2 hp grinder last week at a local auction. It was made in 1973 and I don't believe the grinding wheels were ever changed. They started out at 7", but are now down to 4.75". So I just ordered a new set this morning.

Regarding my POTD. The grinder did not have water pot, so I made one from 3" square tubing. I cut it off at an angle, then cut a 3" square plate and welded it to the bottom. Made a stand off mount for it for easy access. The pot is easily removable for refilling or cleaning. A simple project that makes using the grinder much more pleasurable.

 

[psychodelicdan]

Good looking threads. Practice practice practice!

Master of unfinished projects