The Secret Society of Lathe Trolls

I can’t help in any way, shape or form but it’s brilliant to read there is someone out there pressing records and wanting to improve the quality of their work despite the people around them. Hope you get it sorted.

I was thinking that it’s a mechanical thing too, although I have never seen this head in person.

Anything having become loose or fractured could cause vibration/distortion. I suspect if you try feeling about for anything loose or rattling, even just a tiny amount, you may find a clue to the issue.

markrob wrote: ↑

Wed Jan 11, 2023 8:05 am

Hi,

If you are just looking for dimensions, this pdf may be all you need.

Mark

micropoint90.pdf

Wow that’s awesome thanks so much!

Thanks for taking the time to ask. Could you ask if possible, if it has guides for making cutting styli in the book please? As this is something I am keen to read about. Checked the 3rd edition, and it Does Have Exact dimensional diagrams of the facets of several "models" of cutting stylii that wer...

Thanks for taking the time to ask.

Could you ask if possible, if it has guides for making cutting styli in the book please? As this is something I am keen to read about.

I too would happily pay for the full edition in pdf but it guess the issue there would be it finding it’s way online for free and the publisher then losing out.

Would you know if this happens to have the section on stylus profiles etc please?

Interesting idea, I guess there’s a reason for it having not been done but would be interested to hear the science behind it.

Nice one thanks, I’ll check that out

Hi, Actually, it is possible to measure the voice coil temperature using the temperature coefficient of the copper wire in the coil as a temperature probe. I've used this approach when working on my own DIY heads. See the attached paper for more info. I have made a simple circuit board to make this...

Did this make it on to eBay?

Great effort, thanks for the write up and well done.

Thanks for that markrob. I’ve read this forum from cover to cover and your posts are up there with the best, if not the best! Thanks for your input, you’ve definitely helped a lot of people out, me included.

I have a silly question here. How do you measure frequency response of a head?

I can’t help on the pump but if the metric keys don’t fit have you tried imperial?

Maybe post a photo of the pump and what you’re working with, someone may be able to help figure it out

Petg?

Good work but what type of blanks are they?

Interesting, that green motor is the same in my lathe but branded papst. Mine has a similar issue though, it slows down too easily with some drag

as someone who is restoring a lathe and having to build a lot from scratch, I can echo what has been said here already, these things are simple in principle but in practice there are a lot of nuances and they're actually pretty complex despite how they first appear. its relatively easy task to make ...

You need some sort of isolation, a belt would probably be most affective, that’s the route I have gone down at least. Depends upon your setup and how you want it all to fit together