What warranty? I'm way past that point.... unfortunately when i bought the machine years ago the job it was purchased for got cancelled 2 weeks after the machine was installed on the shop floor... and the other work I had lined up was not suited for the machine. So it sat idle for quite some time.... and when I did get back to it and started having all the problems with the machine it was by then out of warranty .... And do you think the dealer or manufactured cared? They just wanted me to trade it in and buy something bigger that cost more $ when I was still making payments on what I had. Needless to say I have had a crash course in trouble shooting and repairing this machine. I would get a job for it and something else would go wrong....I was about to have it airlifted to California and have it dropped through the roof of the factory.

Machtek The in position specs were way off which is why I wasn't getting an error. It makes me wonder what else isn't set correctly.

Machtek It turns out that the main problem with not being able to rigid tap is with the Gain levels on the C-axis drive motor. I'm in touch with Seimens and they are walking me through how to adjust the drives and other parameters. I don't know about anyone else out there but don't buy a machine from Mighty....I have had nothing but problems with it since the day I bought it.( simple problems like the spindle bearing retaining nut that was never tightened, or limit switches that filled up with coolant because they failed to use waterproof connectors, etc, etc, etc) I think they have monkeys putting their machines together.

Saipem I think your right, i don't believe the machine is properly tuned. I did a simple test....I programed it to tap a hole 1" deep at 10 TPI at 350RPM. I ran the program and counted the number of revolutions on the spindle...it should be exactly 10....but came up short by about 10 degrees. By dropping the RPM I could get the spindle within 5 degrees....by increasing the RPM it was even further off (45deg or more). I even got the spindle to miss a beat after it retracted if I ran it at 750 RPM or more. ( It would hunt for it's align position and go heywire as if it lost it's position). SOMETHING IS WRONG HERE !!!! Time to get this machine retuned. Doesn't really suprise me though, I've had nothing but problems with this machine from the day I bought it.

Yes the machine does support rigid tapping (G84.1), at least that's what the dealer ( worthless bunch of human beings) told me when I bought it. I put calls in to both Mighty ( the machine builder) and Siemens (A2100 controls) to confirm this, but as of yet have not heard back. I have found that the only way I can rigid tap is if I use a floating tap holder, or I'll just keep breaking taps....however I'm one of those people that believe if your sold a product it should perform as advertised without needing a Rube Goldberg fix to get things going. I did find that I prefer tapping in IPR , I can change the RPM without having to change the feed and the A2100 automatically does the recalculating for me.

DavidB My post is already set to add the G95 before the tapping cyle and a G94 to return. So your opinion is that this works best? Why not just leave it in G94?

Yes I checked the math and it is now correct since the feeds are no longer being rounded off to 2 decimal places. Yes the machine does support rigid tapping. The post used to take a feed of say F.0179 (56 pitch) and round it to F.02 when using a G95 code.

I have been having problems rigid tapping (G84.1)on my Mighty mill w/A2100 contols. When reversing out of the hole the tap either breaks or is pulled out of the holder slowly. I realized that the Mastercam post for the A2100 was set to round my feeds off to 2 decimal places so I changed it to 4 decimal places and have corrected most of the problem.....but I am unsure if I should be tapping using a G94 or G95. I am still using Mastercam version 8.1 and the post is set to run G95 for all tapping (the post was written for Cincinnati machines). I've checked my owners manuals but they aren't clear as to why I should use a G94 or G95 in this case. Which would be better? Any help would be appreciated.

Thankyou for the quick responses and helpful info. I'm working on it right now. Nyle Buxton

I have blueprints for a part which is drawn using english dimensions to drill ,tap (10-32, 8-32}& contour but it also has a hole pattern using metric (M3-.5) threads. Is there a way to draw the part in english and then select a metric tap from the library? I am using version 8.1