I'm going to go for another FatScreen build but this time, it'll be using a 10.4 inch screen. The lens I'll need to build will only just fit in the lathe and it'll need to be spot on centered. I've got a spinning arbour and used a 3d printed guide to stick them together with thermal tape. 🙂 - ThreadSky

jamhamster.bsky.social • 13 days ago

I'm going to go for another FatScreen build but this time, it'll be using a 10.4 inch screen.

The lens I'll need to build will only just fit in the lathe and it'll need to be spot on centered.

I've got a spinning arbour and used a 3d printed guide to stick them together with thermal tape. 🙂

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tenpencearcade.bsky.social•13 days ago

DANGER!!!

jamhamster.bsky.social•13 days ago

Yes!! I've spent a bunch of time planning out most of the risk but it's going to be interesting.

I've always had a healthy fear of my lathe, and it makes my bits twitch each time I power it up. This is nearly 2kg, the biggest thing I've ever put in the chuck so I'll septuple check everything. 🙂

tenpencearcade.bsky.social•13 days ago

Eeeeek!

bradanlane.bsky.social•13 days ago

I have been inspired by your curved lens for old-school looking displays(but not enough to overcome the effort).

I have had this idea for a miniature Osborne 1. The core would use an RP2040 to run CPM.

tenpencearcade.bsky.social•12 days ago

I am planning an all in one computer too. Mine will be probably a pico zx81 with mechanical keyboard and built in b&w 4” CRT.

bradanlane.bsky.social•12 days ago

Sweeeet !

jamhamster.bsky.social•13 days ago

That guide got it absolutely dead on! 😲

I'll be roughing it out for a while, I made a custom bit for acrylic that cuts like butter and fires the excess material in a reasonably predictable direction. 🙂

tenpencearcade.bsky.social•13 days ago

I didn’t know you can get metal working lathe tool holders for wood lathes?

jamhamster.bsky.social•13 days ago

Neither did I, mines a metal lathe. Wood lathes give me the Heebie Jeebies. 🙂

tenpencearcade.bsky.social•13 days ago

Ah right! I saw the Clarke logo and faceplate and assumed it was a wood lathe.

jamhamster.bsky.social•13 days ago

Predictable but unhelpful. 😂

jamhamster.bsky.social•13 days ago

I'm honing the lens down slowly using a template. It's a cross section of a 750mm sphere.

I'm using up old rattle can tins as a marker so I just need to trim the marked areas, rinse and repeat.

I have a new idea for the final lens shaping that I'm keen to try. 🙂

jamhamster.bsky.social•13 days ago

There's quite a difference in size between my first build and this one.

I have a plan for the shell and it'll need a lot to go right but it'll be worth it if I can pull it off. 🤞

jamhamster.bsky.social•12 days ago

The lens has been roughed out and I'm going to try this as a lens grinder.

The idea is to offset the axis and it 'should' spin the material and hone it into the final shape.

The theory is sound anyway. 🙂

jamhamster.bsky.social•12 days ago

Well, this is quite the awesome development. I'm letting it run for now and from what I can see, it's doing a grand job.

I'll keep an eye on it as I have a track record of forgetting something fundamental, usually with hilariously disastrous consequences. 😂

smileybob.bsky.social•12 days ago

I know I’m gonna love this when it’s finished.

Wish I had your skills

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