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Member postings for Andrew Tinsley

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

Thread: Piracy in Sales Section.
29/09/2021 16:45:17

It would be interesting to know how the "Pirates" manage to evade the quarantine that new members have to go through. There must have been half a dozen such Ads in the last month or so.

Andrew.

Thread: Hardening gauge plate (O1)
28/09/2021 13:30:04

Sorry Tony,

I should have said harden and temper, old age creeping in! I emphasised the fire hazard because I once had a bucket of oil catch fire. I was doing it as per book too ............ so it can happen and it was quite frightening.

Duncan is spot on, Tubal Cain's book on hardening and tempering is a gem. Gives you the essentials without overloading the theory.

Andrew.

28/09/2021 13:30:03

Sorry Tony,

I should have said harden and temper, old age creeping in! I emphasised the fire hazard because I once had a bucket of oil catch fire. I was doing it as per book too ............ so it can happen and it was quite frightening.

Duncan is spot on, Tubal Cain's book on hardening and tempering is a gem. Gives you the essentials without overloading the theory.

Andrew.

28/09/2021 11:20:57

I use a gas fired furnace to anneal gauge plate or silver steel. I let it soak at 750 centigrade and quench in brine. It is then annealed at the appropriate temperature for its use.

I NEVER quench in oil because it can catch fire. Apart from that it doesn't give the best hardness as you have found. Brine is the easiest quenching agent to use for maximum hardness.

Andrew.

Thread: (old) Proxxon BFW 36/E vs. (new) Proxxon BFW 40/E
28/09/2021 11:10:56

You were asking about Proxxon mills a month or so ago. I said at the time that they were overpriced and poor quality. You seem to have ignored that and went ahead and purchased a Proxxon mill. Your comment was, I think "poor quality".

You now seem to want to compound your error and buy yet another Proxxon mill This time over 20 years old and goodness knows in what condition. Why bother asking on the forum, if you ignore the advice proffered?

Andrew.

Edited By Andrew Tinsley on 28/09/2021 11:13:10

Thread: Annealing and tempering steel
24/09/2021 14:36:51

Thanks everyone for your input, as I suspected, a radiation based pyrometer is not a realistic option as it is going to be very expensive.

I will stick with thermocouples.

Andrew.

19/09/2021 12:08:59

I use a gas fired kiln for annealing and tempering steel. I currently use a themocouple for measuring temperature.

I would like to try a pyrometer for temperature measurement, There appears to be a plethora of cheapish pyrometers on the market (although most use a fixed emissivity) right up to hugely expensive professional gear.

Has anyone any experience or recommendations?

Andrew.

Thread: Multimeter recommendations
07/09/2021 16:01:07

Whatever you finish up with, buy a cheapie off EBay. They are usually a bright yellow and cost around £7. Use this for any dirty jobs. I have two of these plus some top of the range multimeters. I often finish up using the cheapie! They are pretty accurate and no great loss if you happen to back the car over it! Several of my friends have them at my recommendation. All have proved trouble free.

Andrew.

Thread: Best LNER A4 documentation
07/09/2021 15:19:24

Hello Gary,

A4, Dominiom of Canada is still at the Canadian Railway Museum in Quebec. Not quite so far to travel! There is talk of repatriating the loco back to the UK,, but that won't happen quickly, if at all.

Andrew.

Thread: MIG gas/gasless welders - recommendations?
06/09/2021 17:04:30

A very good reason for using a gasless welder is if you are having to weld outside, wind/ draughts play havoc with a gas Mig.

Sure a gasless Mig gives a poorer weld quality than a gas Mig. BUT if you have to work outside, then give me a gasless Mig anytime. A gas Mig doesn't cut the mustard in those circumstances.

Andrew.

Thread: Cannot log in!
01/09/2021 10:55:50

This is Jason Posting.

Looks like it may be something your end.

I just opened your old account and was able to change the password which required me to enter the existing which it excepted (one PM'd this morning)

I then logged out and tried to login using your e-mail and the password I had just updated to and go in no problem.

I'll PM you what the current password is. Suggest you try from another device if possible.

Edited By Andrew Tinsley on 01/09/2021 10:56:25

Thread: Newman Motor Star To Delta?
31/08/2021 15:11:51

I have done the star to delta mod on quite a few motors that are not preconfigured for star or delta. Unfortunately not on a Newman motor. I have yet to find a motor that can't be converted.

Most times the conversion is straightforward, but sometimes it can get quite difficult especially if more than 3 joints are to be seen!

You need to take care with insulating any mods you make to bring out the 3 wires of the star point to the connection box. If you are not completely comfortable in modifying the mains wiring, then I recommend you to leave well alone and get someone do the job who is!

Andrew.

Thread: automating a coil winder
31/08/2021 12:30:43

I have a hand coil winder and would like to automate it. Rather than hijack the electronic leadscrew topic. I thought I would start another.

The ELS solutions are very much over the top for my application and I do not need the high precision. I simply need to drive two motors with speeds that are in a given ratio. I also need to alter the ratio for different thickness wire.

I suppose I just need a very cheap and cheerful "ELS" with no great pretension to accuracy. The cost of the ELS dwarfs the cost of the hand coil winder!

Any suggestions gratefully received!

Andrew.

Thread: Build a Pallet Beehive
26/08/2021 14:03:21

Hello Alan,

It really isn't a smart idea. Wild bees acquire all sorts of nasty parasites and diseases which spread to beekeepers hives. All you are doing is to increase the "wild" colonies which are the source of these infections. At least with controlled colonies, the Beekeeper can address these issues.

If you kept bees, then you might appreciate where Clive and myself are coming from.

Andrew.

Thread: cutting spur gears on a mill
20/08/2021 13:41:53

Yes I tried the method when I was a brash beginner. it didn't work. I suggest you give it a try and let us all know the results.

Andrew.

Thread: Clinging to the Past
20/08/2021 11:53:55

I do model engineering because I want to keep the old methods used in the past as part of today. I suppose something like a museum. If I can interest my grandchildresn in keeping the old ways alive, then I shall be happy.

I am a physicist with an interest in quantum foundations and cosmology, so hardly your typical stick in the mud oldie.

Andrew.

Thread: Design Award
18/08/2021 12:16:29

Looks pretty, but as a practical step / ladder, pretty useless.

Andrew.

Thread: THREAD IDENTIFICATION
30/07/2021 16:05:07

I have an old book on threads dating from 1914 and the usual Machinery's "Screw Thread Book". The nearest thread to 25 tpi is in fact 0 BA (at 25.4 tpi), but obviously this falls down on diameter and the same for 1mm threads.

I am pretty certain that Nicholas Farr is correct and that it is 7/16" 26 tpi brass thread (you say the plug is bronze or brass!). Tracy tools do a carbon tap for £3 and a die for £4, plus postage, plus Vat, so you could spruce up the threads if need be.

Andrew.

Thread: New Chuck won’t screw on
29/07/2021 10:31:08

A friend of mine purchased 3 Myford back plates from RDG at a reduced price (via Ebay), which were described as faulty. They all fitted the Myford spindle , with no problems.

As you seem to have problems with anything you have bought, my money is that your spindle is at fault. If that is not the case then why not buy a "Myford" tap from Tracy Tools and be done with it. For less than £20 you have a solution and everyone can relax.

Andrew.

Thread: Leveling machines
27/07/2021 10:21:08

Clive's mention of a clinometer, reminded me that I have a gunners sighting level from 1944. To those familiar with the device, would this be sensitive enough for lathe levelling?

Andrew.

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