Member postings for mark mc

Not sure about where you are but here in ni we have to tell the fire brigade if you have acetylene gas in your workshop and tell the insurance tho there not bothered about other gases. Where not even supposed to keep acetylene in the shop if there is no one in there. That's the way it is at in my work too, Acetylene must be left outside at night/home time.

so i did a little test to day to show what i mean. from left to right we have hss .5 below dc next on dc then indexable tips on dc and again .5 below dc

the steel may well be to blame too, i'll invest in some en1 and try again

Also i seen this over at model engine maker, very funny.

**LINK**

Thanks chris i never knew about them tho they are quite far away from me and driving thro belfast makes me cringe, hate the place. Nobby i've been thinking of making a Tangential tool as i have some hss but am abit rubbish at shaping the angles but i think i can easy make the tool holder and the tools are just ground at a 45. so I'm going to make one and give it a try, i'm not to bad with the mill but the lathe is getting the better of me. Also chris you say the tips where abit rubbish and to be honest I'm thinking you maybe right. Anyway off to the workshop/mancave to try out yor tips thanks again everyone for the help.

Edited By mark mc on 06/11/2012 08:29:26

Thanks all for the replies, at first i thought it was to much over hang movement in the tool as well so i made a riser block and removed the compound slide this helped abit. I'm based in northern ireland so finding a machinist to watch is a problem. they don't seem to exist here any more!. I'm using glanze tipped tools so they should be ok?

The steel I'm using is old stuff from my work which has been turned before, old shafts from large bins usually 60mm dia by about 5 feet long. the shafts wear out brake, bearing goes so they replace them tho i'm not sure what type of steel it is.

I'll try the gibs and see what happens and try and get a few pictures up to you see what i mean.

Again thanks all

thanks jason, guess i'm just going to have to experiment abit more

Hi all, so being new to lathe work i get the feeling i'm missing something. The problem being if i set my tool tip at dead centre height so it removes to pip while facing, the finish i get is terrible. cutter seems to just bounce and dig in alot but if i set the cutter down say 0.5/0.75mm i get a nice clean cut but then i end up with a pip. Where am i going wrong? lathe is a comet vs with c-tipped tools tho i have tried hss and get the same results. Help!

Edited By mark mc on 05/11/2012 09:26:58

It really depends on what size/materials your going to be working with. I got a chester lux a few months ago, a square collum mill/drill. Let me tell you i was surprised when the lorry turned up to deliver it, it's bigger and heavier than you might think. Anyway a tractor and linkbox and a few chains later it was on its steel frame. And as magpie says don't forget tooling/collets clamps etc as you probably spend as much again on bits n bobs. The main thing to remember is you can always do small stuff on a big mill but your buggered with big stuff on a small mill

I don't think curtains/soft covers are the way to go, a guy at my work place fell from the top platform at the headboard while rolling back the top cover on a walkingfloor last week.A few days in hospital followed. And then add in wind, there a death trap.

I would use the er32 setup as you can use metric collets to hold imperial cutters, so less collets needed

I've heard of people filling the pipe with water and freezing it then bend