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Hi Terry, all,
Terry, thanks for your advice.
I spend a few hours today and the result is shown below The drawbar works fine; and can be tightened easily and sufficiently using the machined nut...

Hi,
for most of my work I use a 3 jaw or 4 jaw chuck, and I like to have available the full D1-4 bore for longer bars most of the time. However, occasionally, I would like the precision of a 5C...

Hi,

Looking at the rotor: where are the combustion cavities? Most (all?) Wankel engines have combustion cavities, see for example the topmost picture on the right on the English Wikipedia page...

Hi,

Option 4: use a tapered end mill.

I vaguely recall that a rack is an involute gear with infinite diameter. It has been 25+ years since I studied this stuff, so I might be wrong. However,...

Hi,
the design looks like an elongated Wankel with a slightly off geometry :-)
Most Wankel engines have a rotor diameter to roter width ratio of roughly 2:1, because that yields roughly square...

Hi,
if you have such a perfect match between the geometry you want and the tools available (and the machine can handle the tool, which, in this case, I think it can), then there is no reason not to...

What Don says: all true. Once you got used to CNC, your choice of tools will probably change.

Then again, for such a light cut, I don't se a reason to use a large cutter when the geometry makes...

I run my Tormach using a very small, self configured computer with an idx mainboard and Atom CPU. Basically, the smallest and cheapest mainboard I could find with a native parallel port. After...

If I would have your problem, I probably would:
-get a 1/4" steel plate from home depot, clean it, glue the part on it (outside of your shop, if necessary)
-clamp the plate, and machine the part...

Hi,
watchmakers have used shellac for generations to glue thin parts on tables, faceplates, or other (sacrificial?) workholders, both for milling and lathe work. So do some toolmakers. When shown,...

Following up as promised. I downloaded a trial version of TC17 and the CAM add-on a few days ago, and played with it, using my old files. I could not reproduce the crash anymore on any machine I...

Hi Randy,



Yes, this is inline with my understanding of the law. I may note, though, that patent protection (that is: the right to exclude anyone from making, selling, or using an invention)...

Hi Randy,

No, it's really only 12 months which can have passed between the date of the first publication (that includes sell, offer for sale, and public use), and the first filing date. A...

Hi,
a question: wouldn't this be a typical application for Loctite 607 or 641?
Stephan

Having had a few "minor wrecks" of my own over the last half year, with no measurable impact on my Tormach, I tend to agree---now. Back then, I didn't know.
Stephan

If the show were restarted, it would probably be without this very Tormach.
When I was buying mine early this year, Tormach offered me the machine shown in the program as slightly used and at a...

That radius would be right for an 1/2" (diameter) cutter, right? For a 1/4", you would use a 0.126" radius?
Stephan

When a stepper axle exposed to a torque moves in the direction of the torque regardless of the programmed direction, then usually one stepper phase is not working. This could be a result of a loose...

Hi zephyr9900,

Yes, USPs are phase locked to the line frequency (while there is one) to allow for a smooth transition when the line power goes off. After that, you may have some clock drift as...

Hi all,

JustGary mentioned the issue of keeping the two 110V USPs in synch. This is serious. It's unlikely that two 110V USPs would keep the 60Hz up closely enough to maintain the 180 degree...

Hi,

could this be a temperature related thing? At room temperature, steel has a thermal expansion coefficient alpha of somewhere between 10 and 20 E-6 (typically, heavily alloyed steels are...

I agree with everything written here so far. To improve your project performance, you might want to take a deeper cut, though. If I understand the original post correctly, you are cutting only...

Hi all,

first posting here in this forum, so bear with me. While I have not cut any stainless yet on my PCNC, I have had some experience with this great material a while ago--20 years or so. At...

Hi Curtis,
please see inline.
Stephan




This is the TC's user interface selection (inside TC). I have no experience with this, but I think it should be self-explanatory.

Hi all,
the trouble ticket has been updated to the status "resolved", without resolving much (at least from my viewpoint). I was informed that
a) the problem is known, and
b) Imsi plans to work...

Hi all,
an update: last Friday, I submitted a trouble ticket to Imsi. Almost immediately I got an automated reply that the ticket was submitted, with a status "not yet viewed". Over the weekend,...

Thanks, Carl, for your input. Now that this has been reproduced, I will try contacting Imsi to see if they are aware, and/or of there is a remedy beyond designing around. I'll keep you and this...

Hi forum,

First posting here, so please bear with me if I violate any etiquette. I posted a similar message over in the imsi TCC user forum, but did not get any reply. Perhaps the community here...