Search found 941 matches

by Dave_C
Tue Mar 13, 2018 4:06 pm
Forum: Home Shop CNC
Topic: G0678 CNC Conversion Build Log
Replies: 52
Views: 8707

Re: G0678 CNC Conversion Build Log

Progress Report: I had to wait almost 30 days to get the timing pulleys for the Z axis and the Spindle Encoder but they came yesterday. So I've been busy toady fitting pulleys to shafts. I've got the Z axis all done except for the belt and it is on the way. Z Axis Cover is done, encoder pulley is at...
by Dave_C
Mon Mar 12, 2018 4:19 pm
Forum: Home Shop CNC
Topic: Building a CNC router
Replies: 11
Views: 1793

Re: Building a CNC router

It is a learning experience. I am retired so time is not too much of a factor. I'm right there with you Mr. Ron! I could have bought a Tormach PCNC100 for about the same money as I will have in this mill project I'm working on but it was never about just getting a CNC mill, it was about making some...
by Dave_C
Sat Mar 10, 2018 9:26 am
Forum: Home Shop CNC
Topic: G0678 CNC Conversion Build Log
Replies: 52
Views: 8707

Re: G0678 CNC Conversion Build Log

Yeah, that is closer to what I intended to do in the beginning. If i can find the right parts, I will still make the change next winter but for now it is going to be what it is.

Dave C.
by Dave_C
Sat Mar 10, 2018 9:15 am
Forum: Home Shop CNC
Topic: Ballscrew tolerances and real world performance
Replies: 12
Views: 2309

Re: Ballscrew tolerances and real world performance

just remember where I was last time
I thought I was the only one with that problem! :roll:

Dave C.
by Dave_C
Sat Mar 10, 2018 9:12 am
Forum: General Discussion
Topic: Slitting saw
Replies: 32
Views: 2223

Re: Slitting saw

Don't climb cut. That's a recipe for disaster Most of our manual mills have enough backlash to let the saw grab and given the number of teeth in the cut it can grab quite vigorously! Even to the point of pulling the piece out of the clamping device. I'm a bit confused over the "putting it in a lath...
by Dave_C
Fri Mar 09, 2018 8:37 pm
Forum: General Discussion
Topic: Slitting saw
Replies: 32
Views: 2223

Re: Slitting saw

Well, from the info given I'd say maybe because you don't say how long this slot would be. It may not be the best use of the saw but I've used them for odd jobs like this and if you have a good blade and arbor you can make some good cuts. Holding it solid is key as well. It can't be bending while yo...
by Dave_C
Thu Mar 01, 2018 11:23 am
Forum: Home Shop CNC
Topic: Building a CNC router
Replies: 11
Views: 1793

Re: Building a CNC router

Ron, Glad that helped. Something I did not mention about G-Code is that not all machines use the same format of the G-code. So to solve that problem the CAM programs have what is called "post Processors" and each machine may have its own post processor so that it can understand and run the G-code pr...
by Dave_C
Wed Feb 28, 2018 3:34 pm
Forum: Home Shop CNC
Topic: Building a CNC router
Replies: 11
Views: 1793

Re: Building a CNC router

Mr. Ron, Going from design to a finished product I suppose is the idea behind any product whether it be from hand sketches and something made on a manual lathe/mill or in your case a software drawing to a finished product. I'll walk you through the steps as best I can for doing it with CNC. CNC part...
by Dave_C
Mon Feb 26, 2018 9:11 am
Forum: Home Shop CNC
Topic: G0678 CNC Conversion Build Log
Replies: 52
Views: 8707

Re: G0678 CNC Conversion Build Log

I thought you were not going to use the quill due to the backlash, and use the knee instead. Glenn, if the backlash issue becomes a problem I'll go back to my original plan and move the quill with a ball screw. I could not get the small size I needed from the same vendor I was using so I opted for ...
by Dave_C
Sun Feb 25, 2018 8:24 pm
Forum: Home Shop CNC
Topic: G0678 CNC Conversion Build Log
Replies: 52
Views: 8707

Re: G0678 CNC Conversion Build Log

Oh no, you've misunderstood how this is going to work. The Z axis is the quill/spindle but it is limited to 4" of travel. However, 4" will do about anything I need to do except to make tool changes for long tools such at when I need to drill or use a reamer. So I only move the knee to change the too...
by Dave_C
Sun Feb 25, 2018 7:52 pm
Forum: Home Shop CNC
Topic: G0678 CNC Conversion Build Log
Replies: 52
Views: 8707

Re: G0678 CNC Conversion Build Log

Not being able to lock the knee would have a significant affect on regidity and finish. This is why bed mils are superior to knee mills even with the knee locked. I agree that bed mills are far superior, but why say "not being able to lock the knee" because I can lock the knee at any height I wish?...
by Dave_C
Sat Feb 24, 2018 5:01 pm
Forum: General Discussion
Topic: It's been a long, long, long time!!
Replies: 16
Views: 1344

Re: It's been a long, long, long time!!

Jose: Good to see you back! Like you, I took some years away as well and did some traveling in the RV. I've since sold the RV and started on a Centroid Acorn Mill conversion. I just about have it done, just waiting on some back ordered parts to show up so I can finish the Z axis and the spindle enco...