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Member postings for Tony Pratt 1

Here is a list of all the postings Tony Pratt 1 has made in our forums. Click on a thread name to jump to the thread.

Thread: Lathe Drilling
26/10/2021 20:51:07

OP mentions centre and spot drilling

Tony

26/10/2021 13:02:52
Posted by Tony Pratt 1 on 26/10/2021 12:13:28:

An good way to check the tail stock alignment is to put the spigot of a lever DTI in the 3 jaw chuck & rotate the probe inside the tail stock taper, obviously this won't tell you if the tail stock travel is parallel to the lathe axis but is a easy test to start with.

Tony

To see if the tail stock barrel is lying on the lathe axis extend the barrel but do not lock it but lock the tail stock body as if drilling, rotate a DTI around the barrel outside diameter at it's front and back, if aligned both positions should clock true.

Tony

26/10/2021 12:13:28

An good way to check the tail stock alignment is to put the spigot of a lever DTI in the 3 jaw chuck & rotate the probe inside the tail stock taper, obviously this won't tell you if the tail stock travel is parallel to the lathe axis but is a easy test to start with.

Tony

Thread: Saving the Planet or is it ?
25/10/2021 20:10:45

This video is worth a look. **LINK**

Tony

Thread: Wandering mill table
25/10/2021 15:48:38

Howard, the Dore Westbury mills do not use dovetail slides, they are just plain bars.

Tony

Thread: Saving the Planet or is it ?
24/10/2021 08:29:29

From the little bit of information/news I have seen or heard heat exchangers are like 'the kings new clothes'? Obviously they will be talked up by the people making a fortune out of selling them but I don't think they are the answer, maybe someone who has got one can convince us.

Tony

Thread: Wandering mill table
23/10/2021 12:44:24

Steve355, the gib screws & the locking screw should go into dimples in the gib strip.

Tony

23/10/2021 11:06:33
Posted by Dave Halford on 23/10/2021 10:59:50:

Going back to the gibs, does that locking screw (third hole) lock the table?

Yes, from memory over 40 years ago when I made one. The OP said tightening the gib screws made no difference, they should certainly lock the table if snugged right up. The gib in my Dore Westbury was just a flat strip of metal so hard to make or fit incorrectly but possible?

Tony

Edited By Tony Pratt 1 on 23/10/2021 11:08:10

Thread: Collets for Myford tailstock
23/10/2021 11:01:28

I do have a tail stock tapping chuck bought in a fit of enthusiasm, used it once but now just use a drill chuck.laugh

Tony

Thread: From where I might be able to source some 1300 micron (1.3mm) mild steel sheet?
21/10/2021 11:38:04

You need to come up with a 'design' which uses obtainable materials.

Tony

Thread: Quill feed milling machine
20/10/2021 11:55:06

From long experience I advise getting a mill with a quill feed, drilling without one is a real nightmare.

Tony

Thread: Inserts
18/10/2021 20:01:02

They do look like parting inserts but if they are only .05" x 5 mm they are remarkably small.surprise The 1125 grade suggests Sandvik Coromant inserts, maybe internal groover but I lost the will to live browsing their catalogue.

Tony

Edited By Tony Pratt 1 on 18/10/2021 20:07:50

18/10/2021 17:02:19

I've used .05" grooving inserts.

Tony

Edited By Tony Pratt 1 on 18/10/2021 17:02:41

Thread: 316 Stainless
18/10/2021 10:49:23

Mild steel will be fine, the key slot may be needed depending on your set up?

Tony

18/10/2021 10:49:23

Mild steel will be fine, the key slot may be needed depending on your set up?

Tony

Thread: Is it best to buy M/C or sub out?
17/10/2021 12:22:54

Brian H, if you have an interest in cutting metal I would say buy a M/C & do it yourself or if you are more 'hands off' & don't like getting dirty sub the work out, neither route will be cheap but having your own CNC will be much more fun!

Tony

Thread: Tool identification
17/10/2021 08:33:54

Groove to the top, bottom tool is for chamfering.

Tony

Thread: Parting off - front or rear
16/10/2021 09:16:16

I too replaced my Warco 290V top slide with a solid CI block & didn't like it at all, I found it very restrictive with no swivelling facility, I also use a rear tool post so I couldn't fit the top slide back on as & when needed. My solution was to completely re-machine the Warco top slide to a decent stand of workmanship & I am now very pleased with it, plenty rigid enough now for heavy cuts, you can indeed make a 'silk purse out of a sows ear'.

Tony

Thread: 316 Stainless
15/10/2021 10:54:52

Stainless IS completely different to brass, feeds & speeds need looking at also you need to keep the tool on centre height.

Tony

Thread: Accuracy of BDMS
14/10/2021 20:16:08

No idea what the specs for BDMS are but it's not the best idea to use such things for your purpose 'straight from the mill' so to speak, you are likely to get size & straightness issues as you have found. Anecdotal evidence suggests engineering materials are not as good quality as they were back in the day, just like many other products.

Tony

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