Rigid Tapping Tutorials / References?

Does anyone have any tutorials or references for rigid tapping in an 1100MX? I’m planning on using m4 and m5 rollform taps.

I rigid-tap those sizes on my 1100MX, but don’t have a reference for you– I had Fusion output the code and carefully watched it cutting air before I went ahead and ran it in metal. I’d start out with tension-compression or floating holder if you have one. They give you much more margin for error (although depth control is trickier.)

IME roll forms need more care on the initial hole size (and it’s different from regular tapping size) to avoid ramping the torque up so don’t just blindly trust your drill is making holes the size it’s supposed to.

thanks! I’m through-hole tapping so I’m not so worried about time at the bottom.

I’m fairly confident about my hole diameters for the roll-form taps.

What I really need is a step by step with G-code.

Fusion outputs the canned cycle. If you’re hand coding, I’d look at that in the Tormach docs.

Just use the conversational. It’s really easy. I prefer the conversational over fusion output for taping. And don’t forget the oil.

Thanks Harold - when you say the conversational, do you mean just use the Drill/Tap and manually enter the pitch (in), threads/in (manually converted from metric) ? Does that work for rigid tapping?

If so, do I have to manually enter the feedrate as well?

What about SFM?

You just enter the pitch or threads per /in,mm and the location and it does the rest. I think the default speed is 250 but you can change it. Only thing is, once you hit run the feed and rpm override knobs are ignored and it runs at programmed speeds. It calculates all the speeds from the tool table and material selection. Just make sure the TPI or mm right because I have seen mine shear the teeth of a 3/8” coarse thread HSS tap.
You can change to g21 metric when running metric taps. Just make sure you enter all positions in metric too.

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