Quick update (sorry no vids yet again)
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I decided to have another go at GWizard to try some feeds and speeds as there is now a new set of parameters you can plug into the tool for gantry style machines such as mine. I did that for a 6mm Carbide end mill using 2mm DoC and 40% step-over and it suggested 17304 rpm at 793mm/min, which I thought was a bit wacky. However, I have just run a circular pocket climb milling in my usual 6082 Ali which was 10mm deep and 63mm in diameter and it ran like a champ, with just blown air (see note 1. below) and the odd squirt of diluted cutting fluid.
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That was the good news but I have a couple of frustrations to sort out:
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1. My misting solution is not working, as air is being blown back up the fluid tube rather than sucking it out - might need to redo or rethink that either by making the injection port for fluid very small (its pretty small as it is) or just dripping fluid out of a separate line into the air flow.
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2. I have some chatter when cutting in the y axis (x axis passes are beautifully stable) and I have some flex when pushing sideways against the z axis (if that makes sense) i.e. looking at the machine from the end on its like the z axis is trying to roll sideways - I'll have to go over all the bolts around that area and see if anything is loose as something may have loosened or I didn't tighten properly when re-assembling the new z-axis (that chatter wasn't there before I cut the replacement).
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Oh thanks to mekanik and the tool above I cut some 1/4" BSP threads on my lathe, but even though the SC4 comes with a 127 toothed gear it still took some fiddling on a spreadsheet to work out a close match, as 19TPI doesn't use that gear and the closest I got was 19.05, which was a little tight but a but of brute force "finished" the threads up nicely ;-) Thread cutting was actually quite easy compared to what I remember from doing it at school, as the Seig has a good reverse and the half nut means I didn't have to faff about with a thread dial etc.
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I have a queue of parts to cut so will make an effort at a video later this week.
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Later
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Chris