alumide on shapeways

hello
does anyone know the weight (cm2) of the alumide shapeways sell.
its similar to aluminium so it can't be too much.
thanks

has anyone ever built anything out of alumide?
is this a suitable drum spinning bar?

i wouldnt make a drum from aluminium as i imagine it will bend out of shape or even snap on impact- but i have never built an ant or even seen an ant so what would i know

If it was a traditional-style drum, normal aluminium tubing would be fine. It's usually the preferred option in antweights I think as steel tubing is probably too heavy.

But with a drum of the above design, I don't know how well it will work. I've heard that the metal-based 3D printed objects tend to be much more brittle than their 'normal' counterparts, so it's a possibility that that drum could shatter from an impact.

Can't provide much more info apart from that though; one of the antweight guys may be able to shed better light on it.

thanks.
could I get this Milled with a cnc.
or are there any other materials that I can get printed

I would just get a piece of aluminium tube and add some teeth possibly made from small bolts

I will start saving weight on the model
anyone who has used alumide tell me.

edit: sounded a bit rude.

what exactly is that ment to be archie?

:oops: my drum spining blade
always like tl be creative
took :roll: about 3hours
how did you do your drum harry

ah. okay.
is it atall balanced?
not really a drum, thats more of a beater.
the last drum i had was made for my by will, but my new one i am making myself, its a bit of alu round bar, turned down and with m4 bolts tapped in as teeth, or to hold a long bar on.

oh, and you say you want to get it printed? really bad idea.

back to the :roll: drawing board
3HOURS

aluminium is 44grams a cm3
what do people do for a material.
polycarbonate is light and strong but too shattery.

ti, hardox or i use p20 tool steel

all quite heavy
ti is OK

well you want it quite heavy.

Aluminium is not 44 grams cm3 it's a 10th of that, about 4 grams cm3

really?
that's nothing
time to make bot bigger

alu is too soft for discs tbh

like 1cm thick is enough.
anyone ever had bad experience with aluminum in discs

at 10mm thick you *should* be okay. 2mm ti would be better tho

Remember, 3D printing is adding material, Milling is removing material.

I think this is one of the main reasons anything that is 3D printed ends up being quite brittle.

I think for the sake of a spinning weapon on an Ant you could just shape some thin Ti sheet. Can easily hacksaw through 2mm, and although it'll take some elbow grease you can file it into shape and drill it.

I got loads of ti from hazard2.
to make it wider could I have a ti and aluminum sandwitch
can you harden materials like aluminum?

The idea of 3D printing in metal is really appealing, but found this disclaimer on the Shapeways website, so I doubt it would be up to robot combat.

Please note that the materials we use for manufacturing the products make the products suitable for decorative purposes and they are not suited for any other purpose . .

It might be useful for a chassis but probably not a spinning weapon.

Oh yeh, chassis only most definitely.

Alumide is 1.35 g/cm cubed by the way.

finally cheers everyone

PS that's as light as polycarbonate is it weaker than that?

PolyCarb is 1.36g/cm, so lighter!

I don't really know anything about Alumide, but Polycarbonate has an incredibly high impact toughness (much higher than that of HDPE) but has it's flaws.

I'd say give it a try!

polycarbonate/alumide
is 4-6mn polycarb enough?

4mm-6mm polycarbonate is fine for amour, just not alll around