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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: Making parting off tools
07/07/2022 15:20:15
Posted by Graham Meek on 06/07/2022 11:07:06:

The front rake angle is the killer as regards a problem with digging in.

self indexing turret.jpg

This is the blade holder I made for my Emco Maximat Super 11 lathe. This was the second blade used in 40+ years. The blade is 13 x 2 mm section, it has a dovetail section and is only ground on the front at 10 degrees.

The section of the blade means the swarf is turned on its side as it leaves the cut and it never caused a jam. I now use an 8 x 1,5 mm on my Emco compact 5, with the same style holder. Parting off is carried out with the carriage locked and at normal turning speeds.

I hope these notes help,

Regards

Gray,

Hi Gray, I hope you are well? I'm slightly puzzled, I understand the 10 degrees front rake but what about the top of the parting blade, is its face parallel with the lathe bed but no back rake angle?

Tony

Edited By Tony Pratt 1 on 07/07/2022 15:21:43

Thread: Quick change toolpost
06/07/2022 21:22:44

Impossible question to answer but some will try😬

Tony

Thread: Tap and die trouble
06/07/2022 17:50:16

We await more details.

Tony

Thread: chuck problems ? maybe others
06/07/2022 17:49:09

I would have thought the 3 jaw chuck would repeat every time if using the same chuck key hole & the same bar even if it's not concentric. As per Baz you need to speak to the retailer.

Tony

Thread: Making parting off tools
06/07/2022 12:03:35
Posted by Rowan Sylvester-Bradley on 06/07/2022 11:02:09:

Is this type of parting tool satisfactory?

LINK

There seems to be nothing much (except the taper) to keep the carbide tip in place, and nothing to stop the tip being driven deeper into the tapered recess.

Thanks - Rowan

All the parting tools I saw in industry were as per your link so yes satisfactory.

Tony

06/07/2022 07:19:58

Just Google Myford rear toolpost to see the listing, Hemingway do the GHT I believe.

Tony

05/07/2022 21:43:45

RDG has one left on EBay atm only one bolt

Tony

Edited By Tony Pratt 1 on 05/07/2022 21:44:06

05/07/2022 19:53:30

I too made the GHT rear parting toolpost many moons ago & found it a great bit of kit held down with 3 bolts, I just Googled the OEM Myford offering which is held down with 1 bolt so fail to see how it can be a better prospect in the parting & rigidity departments.

Tony

05/07/2022 14:39:45
Posted by Martin Kyte on 05/07/2022 13:50:58:

Everything flexes, just a question of how much and for parting does the flexing add to the cut or back it off.

regards Martin

Plus one for that.

Tony

Thread: Index tool?
05/07/2022 12:59:33

Six position indexable stop.

Tony

Thread: Anyone an expert in kitchen knives
02/07/2022 17:20:57

Blade is likely carbon steel which holds an edge better than Stainless steel but obviously corrodes as for the maker some one in Sheffield?

Tony

Thread: Is there a special tool for this?
02/07/2022 10:38:23
Posted by Anthony Kendall on 02/07/2022 10:15:52:
Posted by Michael Gilligan on 02/07/2022 08:34:27:
Posted by Martin Connelly on 02/07/2022 08:06:41:

I have slotted a screwdriver in the past, it works well enough.

Which makes ‘System Zero’ pretty shabby as a tamper-proof screw, doesn’t it ? MichaelG.

Which makes me wonder why it would need to be tamper-proof anyway?

Most probably some countries requirement to stop consumers tampering, obviously doesn’t work🤣

Tony

Thread: Used Myford S7 makes £8k at auction!
02/07/2022 08:51:06

https://www.easyliveauction.com/catalogue/lot/b5f25b2f46f7eb74efb9f795f2b17060/0af8d24542e81eb9357e7ef448a6646f/morning-devon-country-manor-house-attic-sale-ethnogr-lot-604/?iFrameView=1

Tony

01/07/2022 16:36:41

As a long time Super 7 user but now Warco I think you are crazy paying 8k for a 7 series Myford, so many more capable machines for less than that. Just my opinion.

Tony

Thread: Burnerd ec collets...dismantling
30/06/2022 09:59:40

Dog, if the item was incorrectly described raise a dispute, as for rust prevention do a forum or Google search and there will be thousands of answers to a perennial question.

Tony

Thread: 4.70mm #12 G Silver Steel
28/06/2022 21:41:47

Interesting never heard of Bergeron & their expensive staking punches until now, I doubt you will get 4.7 mm silver steel but after heat treat & polishing the 3/16 maybe will fit? Is hardened 4.7 drill rod from Zoro any good? Also your size is listed at Mcmaster Carr. Likely to be made originally from 5mm hardened stock.

Tony

Edited By Tony Pratt 1 on 28/06/2022 21:42:55

Thread: For all you Myford owners
28/06/2022 19:56:15

Myford VME [also VMC & VMF?] also made in Taiwan but fitted with UK electrical parts in Nottingham.

Tony

Thread: Garden ornament on ebay
28/06/2022 11:40:17

That is what the Americans call a 'boat anchor'

Tony

Thread: Burnerd ec collets...dismantling
27/06/2022 14:07:30

Please read the thread, your question was answered back in 2015 by Ian Parkin.

Tony

Thread: I am going to buy a mill….Decisions, Decisions !!
26/06/2022 10:08:14

IF you are in the UK, consumer law protects you for more than 12 months whatever the guarantee or the retailer says.

Tony

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