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Member postings for Philip Powell

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

Thread: identify
20/10/2019 21:56:45

Tricky. Not all stainless is non magnetic. Silver steel is magnetic. Silver steel is ground to a close tolerance. Most stainless is drawn. Most stainless cannot be heat treated. Silver steel can be heat treated. Mild steel is magnetic. Mild steel cannot be heat treated.

Best to buy stock from a reputable supplier and keep separate.

Sorry no simple answer.

Phil.

Thread: Digital inclinometers
18/08/2019 07:59:10

I use my phone...

Phil

Thread: Metal Cutting Power Saw
17/08/2019 21:04:56

I run my Femi dry as per instructions, only two speeds so I just run on the slowest speed all the time.

Phil.

Thread: What 3 Words
15/08/2019 19:17:00

I think you will find it much easier to relay 3 words for your location than longitude and latitude, it much more accurate too by dividing up the world into 3 metre squares. The emergency services have adopted it as well. Check it out fantastically simple idea.

Phil

Thread: Metal Cutting Power Saw
15/08/2019 15:34:20

Ron, I've not cut huge bars in my Femi, 40mm dia is about the biggest so far. I did cut some 125 X 16 ali plate the other day, too wide to fit in the the normal way so I stood it up vertically and put it in the vice holding on the 15mm thickness if that makes sense, cut perfectly. Nice vice too.

When I get a round tuit I'm going to make a table like above in JohnF's picture, should be quite easy and useful.

Phil.

15/08/2019 10:27:15
Posted by Ron Laden on 15/08/2019 08:41:35:

Still havnt got myself a saw but I think I am going to order a Femi SN105XL, its the basic model but has good capacity. I see from a video that it is manual i.e. the blade is pulled down through the cut, would anyone know if this type of bandsaw can be left to gravity feed..?

Ron, not on my little Femi, you have to pull down to make the cut, expensive but worth it. My came with a free spare blade and delivery to soften the blow. Great little saw, I keep mine under the bench.

Phil.

Thread: 316 Stainless
04/08/2019 20:01:50
Posted by Dave Harding 1 on 04/08/2019 17:49:51:

I give it up as a bad job no matter what speed I run it at the carbides end up glowing red and I struggle to remove any material. I binned it and turned it out of mild steel.

Edited By Dave Harding 1 on 04/08/2019 17:50:28

I doesn't sound like you were trying to machine 316 then.

Phil.

Thread: Collet Chucks out of true
04/08/2019 19:57:58

As Pete says a decent collet chuck should be very repeatable. In my experience they are very accurate (useally) they will hold work firmly without damaging the surface and with care thin walled components can be held.

Phil.

Thread: 316 Stainless
04/08/2019 10:12:03

Oh and I forgot to mention in the above post when machining 316 at home (offcuts from the scrap bin) I don't have flood coolant I just drip or brush it on, again it will not harden.

Phil.

04/08/2019 10:08:57

I machine 316L all the time at work. I have never had problems with the material hardening, we use standard indexable tips and for some special cases HSS tools. Flood coolant is is used except when tapping or reaming then we use Rocol. The only thing we do different is keep the speed and feed down and for tapped holes drill a little bigger than the standard drill size.

I sometimes take very light cuts with no problems, if you want a decent finish coolant needs to be used. That said 316L is a very nice material to work with and it's easy to get a very good surface finish.

It's only when we machine exotic metals do we problems with work hardening.

Phil.

Thread: Collet Chucks out of true
04/08/2019 09:57:53

Iain. Have you tried removing the collet and measuring the runout on the inside face of the chuck? Within reason it doesn't matter if the outside of the chuck is not true. This should determine if it's the chuck or collets that's causing the problem.

I presume you have a ER32 church not a ER2?

Phil.

Thread: An old Shaper found in Phuket Town
22/05/2019 19:38:45

I too worked at Cincinatti in Biggleswade , late 70's. I finished off my Apprenticeship there working in the machine shop. I was on the turning section running a Churchill copy lathe churning out machine spindles from forged billets. Then worked on a Cincinnati CNC machine centre programmed with punched tape.

In another of the machine shops there was the mother of all planers churning out machine bases.

It's a housing estate now.

Phil.

Thread: On/off at the top with red green lights. What edge finder I?
23/03/2019 14:30:07

Looks like a sonic screwdriver...

Sorry, I'll get my coat.

Phil.

Thread: Metal Cutting Power Saw
06/03/2019 20:44:20

+1 for the Femi. I got mine from Stakseys last year, not cheap but works well with a good vice. I keep the saw under the bench a pull it out when needed and it has a surprisingly large capacity for such a small saw.

Phil.

Thread: Aircraft General Discussion
20/02/2019 22:34:48

They came from the direction of St Neots, flew down the RAE Bedford car park, sorry runway, then turned 90 degrees left heading for Cranfield.

Phil.

20/02/2019 20:56:47

I was was at Keysoe, about 1k east of the end of RAE Bedford's runway and saw them about 13:20. Fumbled my attempt to take video and stills but pleased I got to wave them off. Farewell Tornado.

Phil.

Thread: Milling on the Chester Craftsman
30/01/2019 20:31:58

Adrian. I have a Chester Craftsman, it does have a single T slot at the rear of the crosslide. Not used it yet but I do intend to fit a rear toolpost when I get round tuit. Not sure it was designed for milling, but I'm sure it could be done.

Phil.

Thread: New Bandsaw Gloat
16/01/2019 21:17:25

I bought a Femi bandsaw last year, it's brilliant. Does exactly what it says on the tin, also it's so compact I just get from under the bench cut what I need then put it out the way again. Came with a free spare bkade as well, not cheap but very good. Wouldn't be without it.

Phil.

Thread: How far to be off tool centre before a turned finish becomes poor?
15/12/2018 21:33:10
Posted by mark costello 1 on 15/12/2018 14:49:56:

Across the pond some of us use pallet strapping as shims, some is .020, some is .023, and the biggest is .030.

Useful stuff that pallet strapping it's made from some kind of springy steel. I use slightly bent as a parallel retainer on the mill.

Phil.

Thread: Single point thread cutting
08/12/2018 07:59:38

Keep the half nuts engaged and reverse the motor to traverse back to the start. Then it doesn't matter what number you engage on.

Phil. Keep it simple dept.

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