Member postings for Alan Jackson

This is much more rigid than the boat toolholder. The base block has a shallow slope enabling the cutting tool height to be adjusted.

Alan

Edited By Alan Jackson on 09/07/2021 17:37:32

MLA version QCTP with no overhang

Alan

If they made the vertical scale more realistic say max 4 degrees then the chart would show a much less steep rise. Just what you can do with manipulated charts and figures.

I entirely agree with SOD and Martin Kyte that the QCTP fitted to a typical small model engineer's lathe suffers from inherant problems, lack of rigidity due to less than perfect fits between the many introduced contact surfaces and increased cantilevered overhang from the support point below. These to reasons alone contribute to more problems than are solved by a QCTP.

Alan

This what I did

Alan

I bet the fuel tank is intact

Vertical misalignment will make a small error, but horizontal misalignment will make much more error simply because the cutting tool moves in a horizontal plane.

He is my grandson's latest creation. When he goes into my shed he likes to invent something, he is five years old and shaping up well as a future model engineer. After he left this creation, I took the liberty to glue it together, hope he approves my input when he sees it, otherwise I'm in big trouble.

Alan

In MEW300 I proposed a small adaptable lathe that could be easily changed in stages from a simple basic lathe through to a version with powered axes then finally onto a fully CNC lathe that could also be used manually or a mix of manual/ CNC as desired. The version show has a cast iron bed but this could be simplified with rectangular steel bars. I attach a screenshot. There are many more screenshots in my album.

Alan

I may be old fashioned but I have never had a problem with Turbocnc with a lathe and threading. It works with an old Dell laptop which needs a printer port and operates on DOS only. I am not a professional at this, it is only home workshop and probably quite slow compared to modern versions. It can deal with curves, feed/rev, G33, G76. tapers etc. It only works with one pulse/rev but it is reliable. The screen only shows G code but you soon get the hang of it.

Alan

Edited By Alan Jackson on 14/05/2021 10:41:04

Much as I try to be careful, I seem to have created a small frosted zone, on my prescription reading glasses, right in my line of sight. I was thinking of polishing the frosted zone away. My question is what should I use to avoid making them worse by frosting the whole lens. I realise it is probably better to just renew the glasses, but it seems a waste to throw them away.

Alan

Edited By Alan Jackson on 04/05/2021 10:40:33

I have just started to go through this fantastic model being built.

What wonderful skills you are showing us all.

Thanks Fred

Alan

Hi Buffer,

I have just found out that my article on a Tom Senior is in MEW 289

Alan

Buffer,

I did spend some time when I first got the machines. I stripped them down to basic parts and I think I spent some time cleaning them up. I do use them though they are not just like that all the time, and the photos were taken after a good clean up. I know what you mean about the dull brown look, but I love the look of these great british machines.

Alan

I fitted a Dore Westbury head on my Tom Senior M1. It was covered in an article in MEW a while ago. It works very well and has lots of daylight.

Alan

Here is my rear toolpost. The base unit has a sloped surface which enables easy height setting without affecting rigidity and the two hold down bolts screw into a long tee nut in the tee slot.

Edited By Alan Jackson on 02/03/2021 11:52:49

Edited By Alan Jackson on 02/03/2021 11:53:32

Edited By Alan Jackson on 02/03/2021 11:55:04

Perhaps there should be a vote on a like button, Like or do not Like. Just saying.

Alan