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Yes, I was talking about a tool post grinder. I have this model:
https://www.dumoretools.com/tool-post-grinders/series-44?osCsid=rft59g211usl8vloaf6vorngg1

I got it from a friend for $100. It...

Ralphxyz,
Wow - I haven't checked my old-old e-mail in about 6 months, and this e-mail was at the top of the list. I've continued with CNC stuff & 3D printing, but the 45hr/week day job and the...

Hi Matt-
FYI there is a V2XT Yahoo group as well - I have one made in 93 that I had converted to Mach3 about 5 years ago. It has been running great ever since.

I believe the files section of...

What about using this product for scanning objects:
https://live.leapmotion.com/
They claim to be 200x more accurate than the Kinect.
Not to mention it would be fun to use in CAD, CAM, etc...
...

Bill -
Fascinating! Thanks for posting this link...

Hi Ian-
I would think that with a 4 axis machine, like in their videos, these could be made in a home shop - maybe not to the same level of...

Great ideas everyone - this type of brainstorming is what I love most about engineering.

Going with the steering box theme, how about back-driving an automotive or truck rack & pinion? Use a ball...

Well, if you wanted to go to the extreme, you could try out a hexapod:
RoboFac
The one on this website is clearly not rigid enough for cutting aluminum, but this approach could have potential, and...

ayastarik- Looks good - what size and reduction is your reducer?

georgebarr - What cad program are you using to generate the geometery? Would you be willing to post the model/excel file here?
...

I know this is an old thread, but I did find a 3D model here:
3D ContentCentral - Login

Keith

How about a windshield wiper motor from a car?
They are high torque due to the worm gear drive, and they usually have a electrical switch that will return them to the same location when the power is...

You need to have external bearings and a housing to take the load. The drive only creates torsional stiffness - it is not intended to handle any other loads, and only will work properly when...

HereinCS-
It should rotate freely. It is likely that you HD unit is in a "Dedoidal" position. Take a look at page 12 of this PDF for an explanation:...

Hack-
One counterbalance option is to use an air cylinder and self-relieving regulator to counterbalance the Z axis. You could dial it in to the proper pressure and lock it there. It would consume...

cogsog-
I sent you a PM.

Keith

steigcm-
After spending 10+ years designing and building high precision gantry machines for silicon wafer and LCD production, you are correct, it usually takes lasers and other expensive equipment...

I have had a couple ideas on how to do this in the past, but they all relied on mounting the plasma cutter head to an arm attached to the XY table. This also required a separate table and there was...

dmatsumoto-
If you are looking to make an inexpensive FDM machine, take a look here:
MakerBot Industries - Robots That Make Things.
or here:
RepRapWiki

I have not tried either of these yet,...

First, in the last few days since I posted, it appears they have greatly improved thier website. Thanks BillTodd for posting the new link.

Their high-tech named ACP "Active Continious...

I have had great experiences using Dav-Tech in Marlborough MA.
Metal Finishing Company Quality Metal Finishing Service Services Precision Metal Finishing

I have used them for black & blue...

Now that I think on the threaded arch a bit more, perhaps the threads in there must be left handed - so that they will shuttle the roller back up one thread.

Hi All-
I was checking into roller screws today, and I came across this:
Creative Motion Group's Hybrid Roller Screw - 2010-04-10 00:47:00 | Design News

So I checked into the company a bit:
CMC...

Impressive Buile mcArch!

You had mentioned in an earlier post that you were looking for a better coupling.

Take a look at these manufacturers:
http://www.ruland.com/products_services.asp...

Eclipze-
Where did you purchase the webcam, and who makes it?

Keith

If you had thousands to spend, you could look at a CNC laser cutter or a water-jet cutter. But since you mention you don't have that kind of cash, you could have the parts quoted that way by a...

You don't mention the cross section of the material, but if it is not too stiff, and you have a heavy duty lathe, (with a very slow speed) you could wind it like winding a custom spring. You can...

Hi Marty-
I sold the machine before I finished the conversion - I had the 6 position lever-operated tailstock, and a friend wanted the whole machine left as a manual machine for a job he was...

Z axis measurement with a microscope...
I think I had read somewhere here on CNCzone how someone had projected a laser line at a downward 45 degree angle. Let's assume that the laser line is...

http://cgi.ebay.com/1-3MP-USB-digital-microscope-Measurement-software-/170488679885?pt=LH_DefaultDomain_0#ht_24523wt_930

I came across this on ebay tonight, and I was wondering if anyone had...

Herbert-
I understand this is a DIY hobby - I bought the Precise spindle for $50. I have it clamped to the quill of my converted 3 axis bridgeport mill for milling circuit boards and tiny parts. I...

CHUCK99Z28-
You mentioned that you have ~$500 to spend...

You can watch Ebay for a Precise Spindle - I have a 1/2 HP model that has a 1/8" collet, and spins to 45,000 RPM.

Something like this...