sandbagger
Master Member
Sure do.
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Typo. 28 pieces. Will correct.
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Turns out you can saw and sand this insulation foam and get a great finish even before casting! Less work to do on the grinder after pouring!
Sandbagger's Iron-Man builds - Now in STEEL
- Thread starter sandbagger
- Start date
Sure do.
- - - Updated - - -
Typo. 28 pieces. Will correct.
- - - Updated - - -
Turns out you can saw and sand this insulation foam and get a great finish even before casting! Less work to do on the grinder after pouring!
stigmorgan
Sr Member
This just gets better and better. Although I have to say 34 sections would give you a third hand and would explain how you manage to get so much done so quickly 
truly amazing work
sandbagger
Master Member
Thanks blokes.
Thanks Mr Murdoch. I did consider that, but as the foam is so delicate, I thought that if I do that and bugger it up, I stand to lose the lot and have to carve them all again. At least if I do one or two at a time, it's no biggie if it all goes to pot.
Thanks Mr Murdoch.
I did consider that, but as the foam is so delicate, I thought that if I do that and bugger it up, I stand to lose the lot and have to carve them all again. At least if I do one or two at a time, it's no biggie if it all goes to pot.
Murdoch
Sr Member
To attach the pieces use hot glue as that too will disintegrate along with the foam...GMThanks blokes.
Thanks Mr Murdoch.
sandbagger
Master Member
Sweet! Thanks mate. I have to sandwich two sheets together to get the depth for carving the hand-plates and was wondering what to use that wouldn't cause issues with the pour. Now I know!
Cheers!
SB
sandbagger
Master Member
Posting up failures as well as success. Here's nearly two hours of carving, sanding and prep wasted as the casting process failed on both pieces.
I re-carved them tonight but it's a quarter to one in the morning now so I better leave it until tomorrow for casting.
I think I'll have to introduce a long sprue to provide enough pressure to push the molten aluminium right in.
This is the piece that I am really worried about casting. It took a lot of time to carve it to match the shape of my hand on the inside and the right look on the outside. If it fails.....
I re-carved them tonight but it's a quarter to one in the morning now so I better leave it until tomorrow for casting.
I think I'll have to introduce a long sprue to provide enough pressure to push the molten aluminium right in.
This is the piece that I am really worried about casting. It took a lot of time to carve it to match the shape of my hand on the inside and the right look on the outside. If it fails.....
George
Master Member
SB,everything you have shown so far was magic and what you have assembled thusfar is a masterpiece.
You want to know what a real waste is? Not your failed casts or your time; you learn from your mistakes and they're worth posting and sharing as well,like you stated.So what is a waste?
To worry and to regret.Focus your energy and make this happen like you've never wanted before and you will amaze yourself with your own abilities.This community is already in awe by seeing your work unfold itself and won't think less of you.Remember that shoe slogan? Just do it :thumbsup we're rooting for you
couldnt have said it better myself.
sandbagger
Master Member
sandbagger
Master Member
You sir, are very kind.
Another failure. Much time spent carving the hand plate for an exact fit. Wasted.
The back of the hand was just a basic shaped plate, but the front, (palm) is a lot more complex so I'm glad I didn't blow that one. Might have a re-think on how I'm going to do this.
The sprue was certainly long enough this time, but I think because the plate is so broad and thin, the aluminium cooled before it reached the edges.
At least the two thumb pieces I did this afternoon worked. At this rate I'll be finished all the fingers in eight evenings if i can have a few hours each night. Midnight and I are pretty well acquainted anyway....
Rough grind. Will finish with files and sandpaper later.
stigmorgan
Sr Member
Have you considered heating up the sand somehow to slow down the cooling process
sandbagger
Master Member
Yeah I thought of that. Gotta watch it, the sand/bentonite mix needs moisture to hold together and if it gets too hot, the foam will shrink before the metal is poured.
You sir, are very kind.
Another failure. Much time spent carving the hand plate for an exact fit. Wasted.
The back of the hand was just a basic shaped plate, but the front, (palm) is a lot more complex so I'm glad I didn't blow that one. Might have a re-think on how I'm going to do this.
The sprue was certainly long enough this time, but I think because the plate is so broad and thin, the aluminium cooled before it reached the edges.
http://i.imgur.com/VxD8ieS.jpg
http://i.imgur.com/I69aKjC.jpg
At least the two thumb pieces I did this afternoon worked. At this rate I'll be finished all the fingers in eight evenings if i can have a few hours each night. Midnight and I are pretty well acquainted anyway....
Rough grind. Will finish with files and sandpaper later.
http://i.imgur.com/hCUWUP3.jpg
http://i.imgur.com/2sOiFxe.jpg
Those thumb pieces are a thing of true beauty.
Your work sir is truly unsurpassed, hats off to you!
