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Member postings for Michael Briggs

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

Thread: CBN Wheels
25/02/2019 22:45:09

I bought a 6” cbn wheel from “The Toolpost” 18 months ago. Delivery took a while and it was not cheap but I am happy with it. The balance is excellent and it is partly coated on the flat side of the wheel.

Thread: Which VFD?
16/11/2018 20:56:47
Posted by Nick Hulme on 16/11/2018 18:30:46:
Posted by not done it yet on 16/11/2018 09:11:05:

I prefer a slightly over-rated VFD.

If you use decent equipment, ABB, Siemens, Jaguar, Mitsubishi etc.then this is entirely unnecessary.
It might be required if buying cheaper, lower quality drives but I only have experience with decent kit.

+1

Thread: Myford lathe protective coating
11/07/2018 00:18:46

Hello Mick, for the machined surfaces I would cover with a rag or kitchen roll then apply paraffin or white spirit. Cover with cling film to slow evaporation and leave for 24 hrs, hopefully that will soften the grease. For painted surfaces the usual do a test piece first. Regards Michael.

Thread: The Workshop Progress thread 2018
24/06/2018 00:37:23

Arc 150mm rotary table, £389, ouch ! 😳

Thread: Hexagon Head v. Allen/Cap Head screws/bolts
27/04/2018 11:18:55

Torque wrench less than 10 lbft, +1

If I need to get a hex head tight without rounding it I use a socket or a ring spanner. wink 2

Thread: blowtorch
02/04/2018 22:28:25

If there was a lack of oxygen in your shed I think you would be physically aware. Sounds to me like a nearly empty gas canister. Regards, Michael.

Thread: Harrison 140
12/03/2018 00:06:57

The rotating chuck could also be a risk.

 

 

Edited By Michael Briggs on 12/03/2018 00:09:57

Edited By Michael Briggs on 12/03/2018 00:10:25

Thread: Bench grinders and their dust
25/02/2018 23:33:31

I bought a cbn wheel for my grinder. Expensive but no abrasive dust, no doubt there will be some hard dust from the item being ground but compared to a grinding wheel much cleaner in operation.

Thread: Bergen Dies and Taps
22/02/2018 23:09:28

I have a number of unsplit Ruko metric dies that form a high quality thread on stainless steel. A split die partly relies on pointed grub screws for rigidity. For starting a thread, taps have a taper built in. wink

Edited By Michael Briggs on 22/02/2018 23:18:53

Thread: Magnetic or optical scales for DRO
15/02/2018 20:53:54

Brian, I too chose m-dro magnetic scales. Very compact and easily cut to length.

Thread: Recommend T handle metric key set
01/02/2018 17:50:14
Posted by Neil Wyatt on 01/02/2018 17:00:42:

No suggestions for a source of 'allen screwdrivers'?

I can only find sets that take the little inserts.

Neil, what sizes do you need, is it for small stuff, telescope screws for example or bigger things up to M8 ?

Edited By Michael Briggs on 01/02/2018 17:51:37

01/02/2018 10:52:52
Posted by Neil Wyatt on 01/02/2018 08:22:43:

I want a set of hex screwdrivers!

What is the range of sizes you are looking for.

Thread: Oh Ah!
18/01/2018 22:55:48

Relax, It's a Fleabay purchase, looks okay in the photograph but it won't work.

Thread: battery problems
13/01/2018 13:22:07

As Marischal said, Vaseline or silicone grease should help. In the ancient past I was the proud owner of a Sinclair ZX80. It had a memory module the plugged in the back that made it crash for fun because of the unreliability of the connections. The official fix was a thin film of vaseline, I was not impressed by the suggestion but it worked.

Thread: Single to 3 phase vfd
13/01/2018 08:26:18

Alan, I have yet to come across a vfd that does not protect itself if the deceleration is too fast. A controlled ramp down is another useful feature of vfd control rather than a motor free wheeling to a standstill. I usually set mine to stop as quickly as possible without tripping the drive.

As far as minimum frequency is concerned I would not hesitate to run at 10 hz, I doubt you will find the motor gets warm unless on a machine that runs continuously for long periods, certainly not the case for my lathe. Michael

Thread: Metal Bandsaw - quality?
08/01/2018 16:10:37

Ega:

The video is of a NG120 which runs in the opposite direction to the 782xl, Femi claim it cuts 60% faster. It may be faster but you lose the option of vertical operation with a table.

Jason replied while I was typing ....

Edited By Michael Briggs on 08/01/2018 16:12:24

07/01/2018 19:17:59

Hello Chris,

I have never regretted spending probably more than I should for a quality piece of kit. On the other hand buying cheap and buying twice has been a bitter experience on more than one occasion in the past. I would explain but I am trying to forget those mistakes. Michael.

Thread: A memory test for the Electronics Wizards
07/01/2018 16:59:23

Looks like a phototransistor in a TO-18 case. The lower rim of the case is visible, markings would normally be on the side of the can so it is probably an unmarked device.

Michael

Thread: Metal Bandsaw - quality?
07/01/2018 16:14:51

I have been considering buying a bandsaw for some time. After a near miss last week with a slitting disk I took the plunge and bought a Femi from Stakesy's. It cut straight without adjustment, wish I had bought one earlier. Whatever you go for check the price and availability of replacement blades.

Thread: 2017 Christmas Challenge
24/11/2017 23:46:16

Christmas challenge awarded In November ? Next year bring it forward to July.

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