Member postings for Nobby

Hi dave , Rick & Guys
Using Clarkson auto lock collet's . A little tip if you want to use a plain cutter without the thread on the end .
Slice the threaded end off an old cutter grind a screwdriver slot across it and use it as a dummy centre . this works fine . If I can find one I will upload a photo.
Nobby

Hi J & Guys

That could be a problem When at work I used a screwing rotating screwing table fitted to a Bridgeport mill using a cutter with the thread form . as you know you had to tip the head to the helix angle . the table was fitted with nuts you could change to suite the pitch required . Used for internal threads on plastic mould inserts Cant list a photo
too long ago .
Nobby

Hi Jason & John
Thank you for reply,s. The cutting edge is on the c/l I have a gauge for setting this . Its a through hole so i could
cut under power as John says It was just a demo for using the handle. The part is for a Drummond flat bed lathe its for adjusting the spindle .
Nobby

HI Guys
Here we are screw cutting an internal thread using a tap 3/4 x 18tpi .
Using a handle with half nut closed . and winding back etc any other idea,s
Nobby

Hi
Well spotted John . Did you notice it's sprung loaded for safety Similar to milling machines
Nobby

Hi Jon
I have a S 7 Mk 1 and doing what Eric & Jon says works fine . so its worth a try . I do this using a mandrel
handle . or keep watching on Ebay
Nobby

Hi
You have not said the depth /deep you want to go as you could use a 3/8" / 10 mm HSS ground to suit
Nobby

Hi
Why not thread it in a lathe with pressure / support from tailstock this will keep it nice and square . and help it start
They  may be a bend in the tube so may not be able to do this .  Or if its a long peice you may need a small hole in the workshop wall ?
Nobby

Edited By Nobby on 06/05/2014 22:57:04

Hi Nick
As W says Grey for HHS Green for Tungsten . Please note before fitting any grinding wheel New or second hand
Give it a tap to see if it rings. If it dont it will be cracked . also the fitted washer should not be a tiny one it may have been said before on a off hand grinder dont leave a large gap between the wheel & the rest . But you already know that !!!!
Nobby

HI Al

It depends on the outside diameter of the lead screw you have the TPI & thread form
Nobby

Hi
What would be useful A diamond trimmer A Habbit diamond radius dresser for rads on the wheel . and a angle dresser .and maybe a pair of mag blocks and a good angle plate with square sides for ease when squaring up items
Nobby

HI
Most modern camera's still use 1/4" whit thread tripod mount
Nobby

If you can get the pressure until its red hot a Stelite drill
Nobby

One like this maybe. some mods I made to it mainly small top slide,X  slide & added a  motor . Great for model making 
& it  can take a fare cut .  Still got original pedal and X slide etc 
Nobby

Edited By Nobby on 09/04/2014 10:25:33

HI Dean
Welcome to this forum . I would go for a Myford Super Seven  photo showing That's parting off  2" diameter mild steel I can take 50 thou cuts or more  with no problems .  Ally for you would be a easy . you can get attachments for gear cutting 

Nobby

Edited By Nobby on 08/04/2014 17:18:49

Edited By Nobby on 08/04/2014 17:26:10

Hi
On mine when I pull the handle back I insert a c shape collar behind the the adjustable rotating bar and under the sprung loaded handle .
Nobby

Hi Tom
Grind an angle on the front of the parting tool say about 15 degrees so that the disk / job parts off nice an clean first then carry on and face the pip off . Are parting from the front or back as you said it must be on the centre line Nobby

As a rule
I would say a steel rule . Wooden ruler , also tape rule
Nobby

Hi Gary Martin & Guys

That,s fine I should have given it more thought it,s my age !!!! I will try it tomorrow Tue 25th . on my S7 , Mk1
Nobby

HI Niko & Guys
If you faced a large Diameter using cross slide . and it faced a slight angle . running a dti across the face using
the same cross slide. surly it would follow the same path ie zero . ?
Nobby