Search found 49 matches

by TechTony
Thu Nov 03, 2016 9:10 pm
Forum: 3-in-1 Metalworking Machines
Topic: Thread Gearing on a BT800
Replies: 19
Views: 14194

Re: Thread Gearing on a BT800

Last post of page 1 of this thread.... got the dial rotation issue figured out. The hole wasn't machined out enough to allow the thing to rotate, so I fixed it. It was practically press fit into that block. Works as it should now. Thanks though.
by TechTony
Wed Nov 02, 2016 5:52 pm
Forum: 3-in-1 Metalworking Machines
Topic: Thread Gearing on a BT800
Replies: 19
Views: 14194

Re: Thread Gearing on a BT800

that's concerning (about the metric threads)..... since I really like running my threads with the motor in reverse and the tooling mounted upside-down..... guess i won't be doing too many metric threads.... hopefully....
by TechTony
Tue Nov 01, 2016 8:57 pm
Forum: 3-in-1 Metalworking Machines
Topic: Thread Gearing on a BT800
Replies: 19
Views: 14194

Re: Thread Gearing on a BT800

I set it on 1 just to see and it worked, so now I know. Should I assume it's a 1 anytime is not listed in the chart?
20161101_204127.jpg
by TechTony
Tue Nov 01, 2016 7:39 pm
Forum: 3-in-1 Metalworking Machines
Topic: Thread Gearing on a BT800
Replies: 19
Views: 14194

Re: Thread Gearing on a BT800

...and the challenges continue.

I'm trying to cut a 13 TPI...
What number on the indicator do I need to use?

Behold my stumbling block!
20161101_193722.jpg
by TechTony
Tue Nov 01, 2016 7:11 pm
Forum: 3-in-1 Metalworking Machines
Topic: Thread Gearing on a BT800
Replies: 19
Views: 14194

Re: Thread Gearing on a BT800

Took the block apart, found the fit to be a bit tight. Reamed it, greased it, and reassembled. All is working well now. Thanks so much for the assist.
by TechTony
Tue Nov 01, 2016 6:37 pm
Forum: 3-in-1 Metalworking Machines
Topic: Thread Gearing on a BT800
Replies: 19
Views: 14194

Re: Thread Gearing on a BT800

You were right - again. I loosened the bolt, repositioned the dial, cranked it up - it now engages with the lead screw, as expected, but the dial doesn't spin like I would expect it to. Tried loosening and tightening the screw in the middle of the dial and got nowhere. I do see the threads of the le...
by TechTony
Tue Nov 01, 2016 3:00 pm
Forum: 3-in-1 Metalworking Machines
Topic: Thread Gearing on a BT800
Replies: 19
Views: 14194

Re: Thread Gearing on a BT800

I don't guess I can post the image online from my phone, but I've attached it. I'll post more angles of it this evening but here's the one image I have available currently.
by TechTony
Tue Nov 01, 2016 7:29 am
Forum: 3-in-1 Metalworking Machines
Topic: Thread Gearing on a BT800
Replies: 19
Views: 14194

Re: Thread Gearing on a BT800

That's a pretty accurate assertion. Thanks Torch! Since you seem to have some familiarity with this type of machine, I don't suppose you can point me in the right direction as to why by indicator dial never spins? From what I've seen on youtube, I would think that it needs to engage with the lead sc...
by TechTony
Mon Oct 31, 2016 9:46 pm
Forum: 3-in-1 Metalworking Machines
Topic: Thread Gearing on a BT800
Replies: 19
Views: 14194

Re: Thread Gearing on a BT800

After looking at the diagram a little bit more I flipped gear D around so that it is in line with gear B (so it's Gear A -> Gear B -> Gear D) - which is what it sounds like you were trying to convey with your don't mix & match statement. Unfortunately, you have to mix and match because the 2 large g...
by TechTony
Mon Oct 31, 2016 8:27 pm
Forum: 3-in-1 Metalworking Machines
Topic: Thread Gearing on a BT800
Replies: 19
Views: 14194

Re: Thread Gearing on a BT800

For clarity about what I think I know...
gears.jpg
by TechTony
Mon Oct 31, 2016 8:23 pm
Forum: 3-in-1 Metalworking Machines
Topic: Thread Gearing on a BT800
Replies: 19
Views: 14194

Thread Gearing on a BT800

I guess I'm a glutton for punishment ... because I'm back. I've never geared a lathe for threading and I'm really regretting not getting a lathe with a quick change gear box. The documentation that came with this thing is total crap. I gave it the ol' college try tonight and as soon as I turned it o...
by TechTony
Sat Oct 01, 2016 1:11 pm
Forum: 3-in-1 Metalworking Machines
Topic: Toolpost sizing
Replies: 26
Views: 12344

Re: Toolpost sizing

In general, it's always modify the tool post/nut/whatever to fit. The base castings on a machine can certainly be machined as required or needed, but the machine is the long lasting bit, and tooling is more like a consumable, you may have several different options used by you or other owners over t...