Screw Cutting on Myford ML7 Lathe - Part 1 - Setting up 

Thankyou Dave, I am pleased that this helped, Best Regards. Ade :)

Thanks Mark, I'm glad they were helpful :)

If you are still visiting RU-vid...How did it go? You still have your piece of engineering art?

@@martinda7446 I could not find that machine so I ended up buying a mini lathe 7x12 Chinese .. :( not the same.. but something. Thanks for asking.

Thankyou carlric

Hi Jeff, I use the thread dial indicator, and engage the half nuts on the appropriate dial position, so the start point can be anywhere before the thread, as the indicator will pick up the thread

@@AdeSwash Cheers Ade, bit rusty with thread cutting thanks, Jeff

Glad you enjoyed it

Hi Jim, thanks for your comment, I have realised I made a small mistake on setting over the top slide with this method, as this gives an advance angle of 35° rather than the 27.5° I guess I got my axes mixed up! I now use a protractor for setting, and set up using the front of the topslide mount against the side edge of the cross-slide set at 62.5° which is much easier to achive and give the correct 27.5° offset. I will make a new video explaining it a bit clearer and link it to the error in this video asap. Incidentally the error isnt particularly detrimental to the actual cutting of the thread, as the cutter remains purpendicular, it is just the advance of the tooling which is 7.5° degrees out of kilter - sorry for the confusion! Ade

Thanks Ade, I'll try again.regards,Jim.PS, the picture attached is not me but my Gauge 3 model of a Great Eastern D16.

Hi again Jim, I have created a new video which will hopefully explain a better and accurate way to set over the cross-slide - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-FE-Rw2JMZKc.html Cannot see any attached pic but that may be just me! Best Regards. Ade

Thanks Ade,That clears my question up nicely.regards,Jim

Hi Thomas, yes, take a look here ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ldsycyUeLZs.html

Hi Philip, you set the compound to half the thread angle (27.5 degrees for a whitworth 55 degree thread, 30 degrees for a metric 60 degree thread) and use the compound to advance the tool (the tool is still setup at 90 degrees to the lathe axis), the theory being is that you are then only using one cutting edge of the tool as it is advanced by the compound, so the strain is less and the resulting thread easier to cut, reducing tool loading also gives a better finish. On a light thread this is less important and it can be left at zero degrees, but it helps on a deeper thread. Regards. Ade

what change wheels do you need

Hi Nathan, it depends upon what thread you need to turn determines which change gears are used

I thought the topslide angle setup semed wrong. If you just imagine cutting a very narrow-angle threadform it becomes more obvious. If you want to use one of those fishtail gauges to do this, I think you have to point the gauge to the left and adjust so the gauge body is parallel to the bed with one of the sides of the point against the back of the topslide.

Hi Johny, the gear train document PDF can be downloaded from my link, this gives you the info needed to decide what gears you need

@@AdeSwash thank you! I will count my teeth gears and see what i need

Thanks Juan, sorry if the radio was a distraction, I will try and remember to switch it off in future videos