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Hi Guys,

I have just received the Thyristors that I ordered this morning. Originally supposed to be coming from the foundry in Italy, but they were actually dispatched from Hong Kong on the 16th...

Hi John, Guys,

A lot of the car recovery trucks use very similar winches to the one in your pictures, they don't use anything to guide the cable onto the spool relying on the load to make the...

Ahh, now that makes sense ! :B

I knew that you wouldn't do something that daft. :)

Hi John,

Looking good ! Though I'm not sure about the friction on the cable, not having rollers where the cable direction changes.

I originally learnt about CAD at Uni way back, then I was taught Autocad, which was OK. Then like you I started looking for software that I could use and understand, that was where Turbocad came in....

Your maths is probably better than mine :U



The motor load going down by a half but the motor current might only go down by a third at any given load.

Hi Steve, Guys,

Just about every trolley jack I've seen or used seems to have an oil leak :) I wonder if that is how they lubricate the pump shaft :o

I bought a new Hydraulic bottle jack from...

Hi John,

The motor current draw when spooling out will always be less than the current when pulling a load ! You can't change that !

I my opinion you have gone in the right direction by...

Hi Guys,

I ordered a DRO on the 20/01/21. Waiting for dispatch.

I'll post when it arrives !

Hi Guys,

Useful for an extended reach air blow gun nozzle. :)

Hi, I've been doing a similar thing with those cheap 125 mm TCT saw blade out of Aldi and Lidl ! Very good value. I've found that the blades are quite well centred and don't wobble up and down...

Hi Greg,

Thanks for that info ! It will be interesting to see how I get on with them. I didn't know about the length though.

I just measured the bed lengths, so it will be interesting to see...

Hi Guys,

Whilst waiting for the Thyristors that I've ordered to turn up, I have been doing a lot of testing and analysis of circuit variations and the few different motors that I have available to...

Hi Joe, Guys,

Many years ago I had a stamp made from lead type by a friend of mine that had a printing business. He made the lead type on his "Linotype" machine. I used it for stamping the...

Hi Greg,

I've just ordered one of those for the mill !
What do you think about it ?

Hi Guys,

Whilst I do have various files, I tend to use some 80 grit emery cloth glued to a block of wood for general deburring of edges. Its kept in the mill drip tray and much handier than...

A 30 mm diameter hole ! That's enormous. I have a very old 1/2" square forged boring bar that would do that easily. It will just fit into a 20 mm hole.

390461 390462

A 30 mm hole in 1" inch...

Hi John,

No ! It was made in the fifties early sixties, it looked reminiscent of a VW Beetle. It was at least ten or more years old when I got it. The Beetle was posh by comparison !

That...

Hi John, Guys,

Its likely that the worm on the spindle is just flat tape wound on and can expand slightly causing the random stopping applying gentle pressure will cause the turns to close up...

Hi Chris, Guys,

That is why I mentioned "D" bits. In fact when I saw your first picture, I thought it was a "D" bit.

Hi Edd,

Yes I agree ! Either way the drill can still grab !

Hi Guys,

Talking about variators, I used to have a car, can't remember the name, but it didn't have gears as such, you released the brake and pressed the accelerator to set off and the speed...

Hi Guys,

The old Hoover Junior could do as well as that ! 325 Watt motor at 22K rpm with a four and a quarter inch fan, and it drove the beater/brush roller at that !

The Hoover Senior with...

Hi J3d, Guys,

The big problem with making an all HSS boring bar is the amount of material that you are going to loose, unless it only a very small one. I've made small boring bars out of HSS rod...

Hi Guys,

Has anyone noticed that the site was only registered on 16/12/2020 !
No contact phone No:
Email contact to a different address.
Registrant details withheld.

Very dodgy to me.

Hi Guys,

I think we need more information !

Thanks Waxen !

Hi Waxen,

Thank you for the pictures, but it doesn't really help, the angle doesn't allow the wiring to be identified.

However do you have four or five wires on yours, and is it a dual voltage...

Hi Guys,

Looking at the motor wiring the right hand picture, the mains input live wire, appears to be connected to the end of two windings, the ones coloured red and white.

The mains neutral...

Hi Dave, Guys,

The number of times that has happened to me over the years !

Unless you have the money to sue, its not worth the bother. You may have noticed that on all my drawings I have the...

Hi Guys,

I made a magnetic pickup wand using a couple of salvaged hard disc drive magnets. A bit like an oversize bike pump made from 20 mm and 40 mm diameter plastic water pipes with a...

Hi Guys,

I made a magnetic pickup wand using a couple of salvaged hard disc drive magnets. A bit like an oversize bike pump made from 20 mm and 40 mm diameter plastic water pipes with a blanking...

Hi Guys,

Motors that small don't usually have a centrifugal switch !

The windings usually have one end commoned to the neutral wire and the capacitor connected between the other ends. The live...

Hello Mark, Guys,

Nice work on those stops !

As far as grinding dust filling the recesses, cut a couple of strips of silicon baking sheet and use double sided tape to attach it to the very top...

Ouch !

Hi Brett,

Re your pictures not being the right way up !

The camera stores the orientation information with the picture in what are called "EXIF" data.

https://en.wikipedia.org/wiki/Exif.
...

Hi Guys,

Apart from being very deaf, I'm also struggling with cataracts. So sorry about the multiple edits !

One last thought. Its likely that the horn bodies are one of the two terminals, so...

Hi Bob,

Yes it will work ! Although your resistor will need to be able to handle 12 Watts as heat.

V squared divide by R

6 X 6 = 36 / 3 = 12

So I would use a 15 or 20 watt rated resistor...

Hi Ian,

Does this help ?

390372

Hi Mike Guys,

Import duty used to be on amounts above £1000. Duty is 20% and so is VAT. Unless I'm mistaken, and I probably am, the so called free trade only applies to food. There are other...

Hi Guys,

I've been playing around a little with feeding the 1 Hp motor I have on the bench, with DC using just a 1N5406 3 amp rectifier in place of the Thyristor. Depending on the value of "R...

Hi Mike, Guys,

That looks like a very nice piece of kit !

As far as importing yourself, it might pay you to check the rules in AU. With the advent of Brexit, we now have to pay import duty...

Hi Guys,

Supposed to be "Myford" green, but yes, nearer BRG ! :)

Hi Jayne, Guys,

Its always handy to have some storage space under the lathe ! I keep my chucks and various lathe keys and other tools under mine. I also made a drawer to keep things like...

Hi Chris, Guys,

As promised a new updated circuit !

I've made several changes including a snubber capacitor across the Thyristor and a protection diode for the gate terminal. The snubber...

Hi China, Guys,

I was rooting through some boxes looking for some parts and found this water/steam pump from a steam mop that packed in a year or two back. The usual thing, the thermal fuse had...

Hi Chris. Thank you for your post.

Yes you are quite right ! the bottom of the capacitor should go to the neutral connection.

Thank you for spotting that error, its nice that someone...

Hi China, Guys,

Usually it is the thermal fuse that dies in coffee machines. Of course they are welded rather than crimped into the circuit to discourage you from repairing them, but a ceramic...

Hi Nev, Guys,

I've used hypo and catheter needles for making pin extractors !

Although I've found that the female pins removed from a plug can also be pressed into service, particularly the...

Hi Guys,

Just an update ! I have been doing some playing about with the circuit and collecting some parts for making up a test unit. I've also modified the circuit a little and done a new...

Tim, It seems that you posted the answer to my question whilst I was still typing :)

In that case the first step is to examine the carbon brushes and replace them if the are worn.