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I'm designing a pcb for a 3-axis controller and interface to the parallel port so that it can be used with mach3. I will post schematics and gerber files when I am finished. I may have 3-4 spares...

Thank you! I will try this on Monday, very good advice !
I'm going to try to find out how to get into the parameter entry mode, I know that it is decoding the quadrature signals at two different...

Hello everyone,

I have an old Heidenhain Pos-E-Touch II DRO that I want to use with some linear encoders. The problem with it is that the encoder dividers aren't set up correctly, so it is reading...

Very true about the nearly negligable costs involved, but I think hobby work really isn't about getting things done cheaper.. It's about getting satisfaction out of doing things, but there is...

Thanks Tom!,

That does look very easy to do, but I'd be concerned about available clamping force. I wonder if it would be rigid enough for most jobs?

You gotta love the simplicity though! I'm...

Hello,

Can anybody tell me if someone has created a QTC mechanism for their mini-lathe and documented it well? I don't really want to spend 100$ on something that I could machine for much less and...

I think I am going to go ahead and purchase it, it's from a friend on mine that works in the industry. Apparently, it's NOS (new old stock) , I will post it on ebay and if nobody wants it for a...

Ali Kat,

A homebrew controller can be designed, but it takes a bit of time and skill. I'm nearly an electrical engineer, so I can manage to stumble through and make it work. I have no idea about...

hehe, yes, that's the reasoning for me saying that most people won't pay this much for something like this :(

I got a quote for a similar spindle, it was 24000$US. The controller, water-cooling...

What I meant was that the 220VAC single phase should be able to power the controller. The controller outputs the voltage for a three-phase motor at variable frequency and voltage. This is a VFD drive...

Yeah ,it has no controller, but I am getting the specs tonight for the driver. One needs to know a bit about the motor, hopefully it is setup for a 220V AC single phase supply (to controller). It...

Maybe I'll just buy it and hope for the best :) Thanks for responding :)

Steve

p.s. - you make some spectacular dyes for your clothes on that site, never seen anything like that before!

Yes! Great idea, that will minimize deflection that would certainly affect the quality of the sensor.

I will post my final project on here when I'm finished next may, maybe someone might find...

HuFlungDung,

Thanks! So, I should turn the inside piece of brass to it's proper OD and a rough ID. Mount it to the indexer, then slit the slots into the piece. The slits won't run all the way...

hmm, it's a manual collet. I didn't have a need for automatic tool change,

My concern is that there are two main markets for CNC machines that I know of. The hobbiest / semi-professional and the...

I'm an idiot, I didn't even post my drawings ! SORRY!

Has anyone tried to create an interface for linear encoders to a display? You can pick up relatively inexpensive linear encoders precise to 1uM off of ebay. I have done quadrature decoding on a...

Hello everyone,

I need to machine this part for a school project this year, but I am a bit uncertain how to do it. The final part will be composed of three different materials: brass, delrin, and...

Hello everyone,

I have a line on a brand new Colibris spindle, but I can't use it anymore for my CNC project. This is a top of the line spindle, apparently one of the world's finest spindle...

Yes Sir, I'm all ready to go with Solidworks. I'm eager to check out what you have done :)

Steve

Hi,

The circuitboard expense I was referring to was the one I am designing to control the spindle. This includes the magnetic bearings, sensor-feedback loop, position loop, current control loop,...

Good stuff Episs,

I can't really comment on the code, since I don't really understand it yet. Fortunately, I get to be forced into learning VHDL this semester :)

Steve

Tolik,

I don't really have a problem with cooling of inrunners, that's not very difficult. For the savings in comparison to a commercial precision spindle motor, you can afford watercool it...

Thanks for your input. I am aware of periodic error and other factors that effect true linear precision. I just think it is a completely silly route to spend that much on a leadscrew. The only way...

Well, I thought it would be neat to find new leadscrews that I knew the specs on, then machine down the ends to fit some shaft couplers.. until I called around to find prices on these leadscrews..
...

skmetal7,

Thank you for your specs, that's what I really wanted to know .

Steve

Thanks for the info, wouldn't it be terrible to know you could have saved 100$ by knowing a certain part number?

I'm still a bit confused about the tolerances question. Basically, if someone...

Hello everyone,

I recently placed an order for the 8" x 12" PRECISION MINI LATHE from Harbor Freight. Can anyone tell me if there has been revisions to this lathe? It seems some models are listed...

Walt,

I checked out your CNC site! Brilliant work, that was gutsy to do what you did with the ballscrews. I bet part of your motivation was personal because people saying it couldn't be done.
...

No Problems! When you're a poor engineering student like myself, you just have a nack for smelling out the best values ;)

Steve

P.S.- Discount Machine Shop is actually a company called Shars at...