Anyone know about ball bearings?

[Techno]

That's a damn good idea, Rob.

I know of one member of the forum who might be able to help (or advise) on that score.
Cheers - Phil

[Aksu]

It seems the smallest shotgun pellet diameter is 1.27 mm, probably a bit too large for this.
Cheers,
Aksu

[Aksu]

This Chinese ebay seller offers free postage. 0.8 mm, 5 quid for 50 bearings.
http://www.ebay.co.uk/itm/50pcs-Si3N4-Ceramic-Silicon-Nitride-Si3N4-Bearing-Balls-GRADE-5-G5-0-8-18-256mm-/291465530871?var=&hash=item43dcb30df7:m:m5dywxQUVdEqprdL9L-VC9A
Cheers,
Aksu

[Techno]

It seems the smallest shotgun pellet diameter is 1.27 mm, probably a bit too large for this. Cheers, Aksu

There's apparently something called 'dust' that might be a smaller diameter ? 
How consistent the size would be, is another matter , though.
I'll e'mail Mr 'X'.......Or ask one of the local farmers.

Another damn good find, just above, Aksu. 

We're giving Clib a few options......I hope !

Cheers - Phil

[Ace of Spades]

That's a damn good idea, Rob.

We aim to please!

Cheers,
Rob

[Techno]

That's 'cos our gang is the best ! 
Cheers - Phil

[Leon]

The vulcaniser runs at 150 degrees for a regular mould, but we can knock that down a bit if necessary.

[Lord Kermit of Birkenhead]

Would a lower temp reduce definition ?

[Leon]

Would a lower temp reduce definition ?

Nope, you just need to tweak the duration and pressure involved, as well as the silicon in some cases.

[John Cook]

Have you thought about using lead shot.  Go to http://www.theleadweightcompany.co.uk/lead-shot-ballast.html.  The smallest is 0.3mm.

[Last Hussar]

Refound this by accident. I want to know what happened.

[Leman]

When I was aI was a kid in the 50s/60s we used to call them bollies and used them just like marbles.

[d_Guy]

I thought about shotgun pellets as well and you can buy them in bags (rather large bags for this application so cracking a she'll probably best.). Dust shot (varmit shot) at smallest runs at right at 1mm diameter, so too big I think.

[clibinarium]

I had forgotten about this thread. It worked- kinda. I got some very small bearings which were too big and were quickly abandoned. Then I managed to get some smaller solder balls and they worked ok, but were just too big as well. Didn't try anything smaller as the solder balls were very difficult to handle; too small to pick up with any sort of grip, they had to be pressed with a fingertip to stick for a few seconds and then had to be shepherded  around the putty to then press in. Lots were dropped 9though the vial said there were ten thousand it it so I was not going to run out. Ultimately it was a lot of work. I've decided to go to digital sculpting and printing to do this project, so a whole new approach has to be learned.

Below are some abandoned sculpts with the results of the solder balls

https://photos.app.goo.gl/8k3Zr7adtGYiop3Q2

[O Dinas Powys]

I had forgotten about this thread. It worked- kinda. I got some very small bearings which were too big and were quickly abandoned. Then I managed to get some smaller solder balls and they worked ok, but were just too big as well. Didn't try anything smaller as the solder balls were very difficult to handle; too small to pick up with any sort of grip, they had to be pressed with a fingertip to stick for a few seconds and then had to be shepherded  around the putty to then press in. Lots were dropped 9though the vial said there were ten thousand it it so I was not going to run out. Ultimately it was a lot of work. I've decided to go to digital sculpting and printing to do this project, so a whole new approach has to be learned.

Below are some abandoned sculpts with the results of the solder balls

https://photos.app.goo.gl/8k3Zr7adtGYiop3Q2

It's a shame that it was such a pain, they look really effective.

What you need is something like a syringe (or plastic Pasteur pipette) with an aperture slightly smaller than the pellets: suck them onto the needle, push them into place then release the pressure 

What diameter are the pellets?

[clibinarium]

Label says "0.76" , no units but presumably mm.