Assignment: Design a 3D mould, machine it, and cast parts from it.
I decided to mold a small hull of boatusing the small CNC (Roland monoFab SRM-20)
Here is the Machinable Wax piecein which I will do my mold |
Using the software Modela Player 4coming with the Roland monoFab |
Compiling the Roughing jobwhich is the first milling job |
Here is the previewand the positioning of X/Y Zero and Z Zero |
Milling in progressusing a 4mm Square milling bit |
Milling finished |
Here is the result of Roughing |
Configuring the Finishingusing a 1,5mm Ball milling bit |
And here is final resultgreat machin this Roland! |
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Doing the mold with Silicon Rubber RTV/HE (same as used previously for the recast job, see extra below)
Silicon Rubber in placewaiting for 1 day to harden |
Here is the mold in Silicon Rubber |
Casting of the hull done, waiting ... |
And here is the final "mini Hull" :-) |
As I was not able to go to Woma FabLab the week of the assignment, I decided to do a mold from an existing object, and (re)cast the object
I took a Chess piece, the white queen, and I did a mold of the piece using some Silicon Rubber
Here is the Chess piecethat we will duplicate |
The piece is brushed with polyvinyl alcoholso that the Silicon will not stick or mess the piece of wood |
Putting the piece in a tubein which we will do the mold |
Here is the Silicon Rubber usednamed RTV/HE |
Mixing the Silicon Rubber |
Weighing the Silicon Rubber |
Mixing it with the good quantity of hardener |
Casting the Silicon Rubber inside the tube |
And waiting for 1 dayso that the mold can harden |
Mold is taking out from the tubeit is solid now |
The bottom is cleanwe can see the bottom of the wooden piece |
Taking the Chess piece out of the Mold |
Using a cutter to open the mold |
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Using polyester resin to recast the piece
Closing the moldusing scotch |
Doing the mix of Polyester Resin with the Hardener (2%) |
Casting the piece |
Top surface is plan |
And here is the new piece ... a crystal queen! |