Brass Vertical Hanging Sundial

This project was a departure for me: from wood to brass. I’ve always fancied making a sundial, especially a vertical sundial.

Software:

In the I end used this wonderful piece of software: ShadowsPro - sundial and astrolabes

Machining: I did everything with an Amana 90 Deg V Bit (45 IPM, 18k), except the slot for the Style and cutting out the Style where I used 1/16 flat bit (5 IPM, 18k)

Material: 3mm Brass for Dial, and 1.5mm Brass for the Style (Gnomon)

Dimensions: 250mm x 250mm

Lessons Learned (Even Better If…):

  • Experiment more with Brass carving Feeds/Speed and get a sharper bit (I have punished this bit since July 2021 when I first got my 1F and I doubt it was meant for brass)
  • Whilst I enjoyed programming F360 and understanding the math behind sundials, Shadows is a great bit of software, so just use that.
  • photographing shiny things is awkward - the finished dial looks nicer than the picture (and I always look fatter in a picture)

Nice job. But, this post should come with a warning - deep rabbit hole ahead :grin:

Well done, Andy! I hope you’ll keep us updated re: machining brass. I still have the Kratzer’s polyhedral on my bucket list. I’d love to do it in brass, I’d have to figure out how to neatly join the panels. As I recall, the original is in a museum near you. I wonder if you ever got to see it?
Rabbit hole, indeed!

No, yet seen it. But it is still on my places to visit.

Googling the sundial brought up our original exchange on the forum: Lots of Wonderful Signs...has anyone used their CNC for something other than signs? - #49 by SailorMike?

Its taken me over 18 mths to get on with it. I’d say my concept to product output duration is a bit long.

I came across this sundial on a trip to Mallorca earlier this year