Yet another Jango build by Jawatrooper

[Jawatrooper]

just dipping in acetone is not enough. You really have to brush it a couple of times with acetone to make sure that the outer perimeter becomes watery ( but with the powder on it). Main problem is that the acetone dries very quick. I guess if i sand a little more with higher grid it would be also better result. Something positive is that if you sand through the aluminum layer you can simply reapply the acetone and powder and its fixed. I have also orderes some finer powder with less than 5microns. Currently I use powder with less than 65micron (230 mesh).
Would be interesting if someone could do also so a test with this.

 

[hvacdon]

Yeah,you would think that the finer powder would adhere better and finer grit sand paper should do more polishing than removal of the aluminium!
Good thinking!

 

[Kdogg211187]

Well the process of cold cast requires mixing the aluminum powder with the liquid resin and then pouring it into the mold where it hardens. Would combining the aluminum powder and say something like XTC-3D or some clear resin then applying a thin coating to the print work? Once the coating hardens, could you take some fine steel wool or high grit sand paper and expose that aluminum grain? I dont know just spit-balling here.

 

[Jawatrooper]

Mixing aluminum powder with something like XTC 3D was my initial plan. In my case I use meanwhile some epoxy that is used as Top coat for boats etc. This was recommended by the epoxy manufacturer.
My trials to bring the aluminum to the surface with acetone happend by accident and now I am doing some research to check if it can be like cold cast.

 

[Jawatrooper]

So here is one more picture after sanding with 1000 grid and buffing.

 

[Kdogg211187]

thats actually not too bad

 

[droidbait]

So here is one more picture after sanding with 1000 grid and buffing. View attachment 190625

Damn nice! Especially being a 3D printed piece. Nice job man!

 

[Jawatrooper]

Damn nice! Especially being a 3D printed piece. Nice job man!

Thanks!!

 

[Jawatrooper]

After long time a little update. Did a new knee with finer powder. I have to say I am pretty happy with result.

 

[droidbait]

Dang! That's is crisp!

 

[hvacdon]

Wow, that looks awesome JT!!

 

[KaliFett]

Wow..that’s awesome,great work!

 

[bryceelischer]

Thanks. I have printed it myself. The silver is rub n buff. Currently I am playing around with an epoxy Aluminum mixture (like coldcast) to coat 3d prints and get the same coldcast finish. First results are pretty good.

So I made a mold from a 3D printed helmet to cold cast. I’ve got extensive pics to document the process. I’d be happy to send if you’d like

 

[kiffren]

Any chance I could snag the knee stls from you?