Here is a list of all the postings old mart has made in our forums. Click on a thread name to jump to the thread.
Thread: New highway code rule. |
23/01/2022 15:36:25 |
In Weston Super Mare, cyclists are allowed on pavements and that works quite well, but you do see old fogies driving their electric buggies along the roads which is illegal if the buggy does not have numberplates. |
Thread: Myford Steady on a Boxford |
23/01/2022 15:28:42 |
That is a good way to use a smaller steady on a larger lathe without making it unusable on the original lathe. You do really need a mill to make the adaptor. I modified and made adaptors for 2 fixed steadies to fit the museum's Smart & Brown model A simply because the original ones were costing £150 plus on ebay. Both were intended for Chinese lathes, the small one can handle up to 2" diameter and is C shaped and the other is up to 3 1/2" and hinged. They both had their bases cut off and were milled to fit Aluminium adaptors. They can both be bolted to either side of the adaptors which helps when setting them up. To make them easier to fit to the lathe bed, the locking block underneath has a captive nylock nut which helps turn it into position when tightening or removing. The bigger one has a second set of fingers I made with little sealed ball races which are very good. I got lucky when a travelling steady for the model A came up on ebay cheaply because it was unidentified. |
Thread: Smart meter |
22/01/2022 21:03:34 |
We had gas and electricity smart meters installed a couple of years ago, by a kid just out of school who had obviously only been trained to fit meters, he didn't seem to be a quailfied electrician or gas fitter from the ballshit he came up with regarding the running of them. |
Thread: solid carbide spade? bit for drilling spring steel saw blade |
22/01/2022 20:55:32 |
There are always new ways of doing something, I have a power hacksaw blade and had never thought of drilling extra holes in it to use it in a 12" hacksaw. |
Thread: New highway code rule. |
22/01/2022 20:51:01 |
The picture is a poor example, as the cyclist is approaching the door from the easily seen direction. I always use both hands, as I have arthritis and cannot hold the door with one hand. |
Thread: Advanced Grinding Rest |
22/01/2022 20:21:52 |
Its very sophisticated, I won't be showing anyone pics of my effort now! |
Thread: New highway code rule. |
22/01/2022 20:14:34 |
I have just noticed this new highway code rule in the news, and appologise now if it was mentioned recently in the forum. |
Thread: solid carbide spade? bit for drilling spring steel saw blade |
22/01/2022 19:08:41 |
If you have the means to sharpen the tip of a masonary drill to use for a cheap alternative to solid carbide twist drills, then try it. Otherwise Bosch do sets of multipurpose drills, like these sets from Screwfix.
|
Thread: Wire wicks |
20/01/2022 21:56:19 |
Pipe cleaners |
Thread: Lathe change gears vs gearbox |
20/01/2022 21:16:12 |
With vintage sewing machines, the threads were quite often proprietry, so you had to buy genuine spares, so matching thread pitches would be inexact. Of course a near match would probably be ok, after all sewing machines don't need airworthyness certificates. Some of the old Singer screws looked like they had been hand filed by an apprentice. |
Thread: Tom Senior light X Axis power feed |
20/01/2022 21:00:02 |
Edited By old mart on 20/01/2022 21:05:05 Edited By old mart on 20/01/2022 21:07:43 |
Thread: Lathe change gears vs gearbox |
20/01/2022 19:53:42 |
Welcome to the forum, Nick. A lathe with a leadscrew benefits from more than just threading operations, the finer thread pitch settings are useful for simple turning giving a power feed for the saddle (carriage) in both directions. The lathe that I use can cut threads down to 76tpi and 152tpi if the change gears are selected to halve the leadscrew speed. That is down to 0.013" and 0.007" per turn of the spindle. This particular lathe also has a feed screw which will allow power facing and turning down to 0.001" per turn, but that feature is normally confined to the more sophisticated and expensive types. For your particular size of work, the Myford range would be ideal. |
Thread: 3 phase supply (again) |
17/01/2022 15:13:16 |
It might prove more economic to change some of the less demanding machines to single phase motors. |
Thread: Inverter for 3 phase supply |
16/01/2022 22:12:29 |
If you have a 2 hp motor and want to save money when buying a VFD, then get one that has a standard single phase 230V supply. The inverters which have a three phase input cost quite a lot more. As I said in my earlier post, look for the "IDS quick start guide" , not all of the VFD'S that the Inverter Drive Supermarket sell have it. Having remote controls is better than relying on the ones on the VFD, which are only intended for setting up a motor from scratch. |
Thread: Three phase reversing |
16/01/2022 17:18:32 |
Thanks for all the help, but having looked at that video, it would be alright for experienced people to see the many undesirable work practices, but the novice might think they were ok and end up having an accident. |
Thread: Milling machine advice |
15/01/2022 21:41:36 |
The ARC Eurotrade advert on this page is a very good place to look at machines and tooling. The owner, Ketan is also a member of this forum and has an excellent reputation for after sales service and advice. |
Thread: Aluminium Composite Material |
15/01/2022 19:36:13 |
The variety that I have encountered had the aluminium skins bonded securely to the substrate, it would not have been easy to peel it off. |
Thread: Bearingboys Ltd Excellent Service |
15/01/2022 19:32:45 |
They supplied the bearings, one metric SKF and one imperial Timken for the R8 spindle conversion that I did on the Tom Senior light vertical. I would use them again. |
Thread: reversing a single phase motor |
15/01/2022 19:27:26 |
I would swap the incoming live and neutral wires from the mains lead, brown to A and blue to 7. |
Thread: Three phase reversing |
15/01/2022 19:18:24 |
Today, I tried out the reversing lever. Without a chuck and in backgear. The lathe was in the fourth backgear speed at 102 rpm, it will go down to 39rpm. The instant reverse was painless, no strange noises which was encouraging. I noticed that just switching the lever to off from forward or reverse stopped the spindle in only 1 1/2 seconds. Having a chuck on would increase that slightly, but the extra drag from having the leadscrew engaged would probably compensate. It looks like that I will be using the lever to stop first and then change direction, this will give me plenty of time to back off the cut on the return run. |
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