Good videos, would be interested in other parts of the build too.

Love to see the morror videos

You should use resin that get solid very slowly then you may have good results. Better do not put heat to the process to may it slow. Also if you can find a resin with lower viscosity will be helpful.

Cant the mirror finish be applied right to that epoxy mold?

What is that software i see on your laptop ? Apparently to control your motor. Thanks.

why you did not work with a glass base instead of a wood base?

Where is the 3th video? Did this method work?

Ini sangat keren. Saya sangat penasan dengan hasilnya. Apakah bisa di jadikan teleskop?

At what speed is it rotating

if you pour the resin from high up and make the stream as small as possible it will help eliminate the bubbles

would it be an accurate figure? is it possible to spin the glass directly inside the kiln?

@SmeeUncleJoe

4 жыл бұрын

Yes, but it would still require fine grinding and polishing. The quality of the "figure" that comes out of this will save a lot of rough grinding but is not sufficient for a finished mirror.

@drdefecation

3 жыл бұрын

Some large mirrors are spin-cast, but as Joe said they're not precise enough. It saves time, but isn't the complete solution.

If you get this to work it would be huge. Making a large parabolic mirror for a few dollars.

Can i get the equations you use to calculate the spin rate?

@omegageek64

3 жыл бұрын

I used the calculator on Mel Bartel's web site. www.bbastrodesigns.com/sagitta.html

@mikeawilliams7104

3 жыл бұрын

@@omegageek64 thank you

Waw

Could you just silver the resin mold, and use it as the mirror?

@SmeeUncleJoe

4 жыл бұрын

No. It has to be accurate and thermally stable to fractions of a wavelength of light ...ie nanometers.

@gianniformica8235

3 жыл бұрын

Why cant the surface be buffed to the correct surface.

@SmeeUncleJoe

3 жыл бұрын

@@gianniformica8235 Good question !! Because it can't.

@gianniformica8235

3 жыл бұрын

Been doing a little reading and it seems NASA has managed to get this right.

@SmeeUncleJoe

3 жыл бұрын

@@gianniformica8235 Which means what, that NASA uses buffing wheels to figure their mirrors ? That would be news to me and I'd love to see a link. I did not know NASA made mirrors,in the first place.

Idk if you're still on YT but just coat it with aluminum paint and show us what it looks like please.