Gallery, Projects and General > How to's
Thread cutting video part 2
Brass_Machine:
Hiya John!
Caught your video... I like the production on it!
Scanned some of your other videos. A JET CART???
Thought I was insane...
Eric
nel2lar:
we would expect nothing less! very nice video and narration. keep up the good work
:clap: :beer: :wave: :proj:
Nelson Collar
NickG:
Brilliant video John, thanks. Shame there are plenty of idiots on youtube making comments. Jet Kart is awesome but you wouldn't get me sat on it!!!
That nut has just confirmed I am never buying another Chinese machine - I expect my mill needs an entire rebuild. The more I wind the table across, the bigger the error gets going from the dial - must be a big thread pitch error. Don't think the table is flat either and there is run out in the spindle unless the quill is nipped slightly! Pile of cr@p!
andyf:
I'll add my applause to the general acclamation, John. A very instructive pair of videos, and I'm looking forward to Part 3. Sure beats watching the TV.
Nick, could your feedscrew be metric pretending to be imperial, or vice versa? That would produce an error of around 1.6% between what the dial says and what proper measurements show.
Fergus OMore:
I'm wondering about Nick's machine. As far as my experience goes, the Chinese mills have a few potential problems. The first that I hit on my Warco mill drill was or were the gib adjusting screws. They were pretty sloppy and allowed 'push and shove' of the tapered gibs. I would have thought that new screws coud be machined- and fitted more tightly to the recesses in the gibs. ( a thought, no more) Again, the nut is one which can be nipped up- or mine can. The leadscrews are substantial enough.
I'm saying all this because in the last century( ye Gods) I got a set of home castings that had been dropped at Gateshead Tech, part machined and I built up a Westbury- no, not a Dore Westbury- and found all sorts of errors or adjustments were needed to take up it to some degree of accuracy.
I may be wrong but that's my two pennorth for what is worth.
Cheers
N
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