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Nice design (both of them)! One of your design goals was to make the precision machining within one setup. The first design accomplished that. On the second design, how do you plan on making the two ...

Very nice work on the mill!

Yes, remove all the G28 lines, and add manually any moves of your own for the Z. I ran into the same issue and this fixed it for me. Note, I’m a beginner at Fusion and Mach 3 so don’t take what I...

Thank you for the info. Before I saw your reply, I had found another thread that said taking it out is like pulling teeth, and if you do take it out, you have to plug the hole or the leadscrew will...

I want to remove the travel stop post. I removed the cross screw completely, but I still cant get the post out. Does anyone know if this is pressed in, and needs to be removed by removing the table,...

Thanks for the replies.

I'm turing finished items that must run true, but would like a bit more convineince than a 4 jaw that I'm currently using.

I have an adjust-true type chuck that did not come with instructions, and I've yet to mount it on my lathe.


The 6 bolts that attach the chuck to the backplate:

1. Are they supposed to be snug...

Thanks.

Is that something they did for you? Or did you buy the balls elsewhere and install them?

Is there a big difference between preloading with larger balls vs. with two nuts? Larger balls...

How did you make them preloaded? Did you just use two nuts per screw with a space between them? That doesn't add up to an increase of only $9.65. If its a different nut altogether, what is its...

I read somewhere that you don't need to anneal the ends at all. Because the screw is only case hardened, you can take another approach: On a "real" lathe, set the depth of cut for your first pass to...

Please post pictures if you can. Thanks.

The annual Cabin Fever Expo is this weekend from January 14-16 at York, Pennsylvania. They have hundreds of exhibitors, and everything related to metal. They also had 10 or so hobby type CNC booths...

I just checked the machine. It has a pull-out knob that engages the cross feed. The knob has 2 positions: in and out. In is off, and out is on. The only other control knob/lever on the apron is...

Actually, the lathe has never run yet since I got it 2 months ago. And the guy I bought it from never used it. It was his uncle's who last used it 20 years ago. The leadscrew does have the...

The tailstock setover method only works for the butt, not the shaft. The but is a straight (constant) taper. But the shaft actually has a curve to it. I have tried the tailstock method in the past...

This machine will be dedicated to build pool cues. The back half of the pool cue (called the butt) is just a straight taper. The front half of the pool cue (the shaft) has a "curved taper". But...

I have an old Atlas 10x36 that I'm going to convert to cnc. I want to make this as simple as possible, as this will be my first cnc. I do, however, have extensive manual machining experience.

I...

machintek,

I see your point about the possible out of round that may result when replacing the plastic bushings. I was thinking about that when I was installing them. But then how do you make...

Wow, I didn't think I would ever get a response. Thanks.

I actually just completeed putting the mill back togetehr this week. I bought the kit that has all 4 of the thin black bushings and...

I finally got my Bridgeport mill wired up this weekend. The head makes a very loud noise, and I was hoping someone here might recognize the sound and have a good idea of specifically what part needs...

How do you handle mechanical backlash on the rotary axis? Are you using some sort of brake? Is your reduction via belt or gear train?

It seems with linear motion you can use ballscrews or always...

I never thought of the problem with tuning if using servos. I might use servos, so I would like the potential of a good zero backlash system.

I thought new bridgeport ballscrews were just...

I just got my used Bridgeport and will like to convert it into a 2 axis (possibly 3) cnc. What is your opinion on the following:

1. Not using ballscrews. How accurate could the machine be...

OK. I'm still confused on the manual Z axis movement. You said that you keep the Z axis screw and nut physically engaged when in manual mode. That means that when you move the quill using the...

I'm glad you still have your finger :)

I did not quite understand your answer for manual Z axis control. Are you saying you can still move the quill using the original lever if you reinstall it? ...

Great thread! I'm about to finalize the purchase of a used Bridgeport clone this week, with the hopes of converting to CNC.

IJ, you said you still have complete manual control if you ever want...

Wow. One innocent question and all this:)

Ballendo, I am fairly confident that precision and accuracy are completely separate measures, with neither having any dependancies on the other. I will...

Oh, and the beveled edge is a great tip. Thanks. The only thing that worries me about it is the possibility of a gap on the bottom side of the inlay.

Turmite,

I didn't think you weren't flaming me, and found your post amusing.

I have been doing cue repair work for about 5 years, but have yet to build one from scratch, mainly because I can't...

Mike,

If your machine can make many parts that come out the same, then it is a precise or repeatable machine. You can use those two terms interchangeably. Comparing parts is probably a good way...