 Winters are long in NY |
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| Unobtanium-inc |
 Jan 5 2025, 06:58 PM
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#1
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Advanced Member  Group: Members Posts: 2,288 Joined: 29-November 06 From: New York Member No.: 7,276 Region Association: None 
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Lots of time to sit by the wood stove and make little resin cars, I added some new additions this year, check out the transporters!
Happy New Year everyone! Attached thumbnail(s)     
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Replies(1 - 19)
| Unobtanium-inc |
Jan 5 2025, 06:59 PM
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#2
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Advanced Member Group: Members Posts: 2,288 Joined: 29-November 06 From: New York Member No.: 7,276 Region Association: None
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More more.
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| reneedicherri |
Jan 5 2025, 07:52 PM
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#3
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✨irresponsibly cheerful ✨ Group: Members Posts: 26 Joined: 22-October 24 From: Emeryville California Member No.: 28,432 Region Association: Pacific Northwest |
Really fun! Do you make the moulds yourself?
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| Unobtanium-inc |
Jan 5 2025, 08:41 PM
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#4
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Advanced Member Group: Members Posts: 2,288 Joined: 29-November 06 From: New York Member No.: 7,276 Region Association: None
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QUOTE(reneedicherri @ Jan 5 2025, 05:52 PM)  Really fun! Do you make the moulds yourself? Yes, I make them, that's one of the hard parts. |
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| bkrantz |
Jan 5 2025, 09:21 PM
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#5
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914 Guru Group: Members Posts: 8,203 Joined: 3-August 19 From: SW Colorado Member No.: 23,343 Region Association: Rocky Mountains
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So cool. (IMG:style_emoticons/default/pray.gif)
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| 930cabman |
Jan 6 2025, 05:57 AM
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#6
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Advanced Member Group: Members Posts: 3,821 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States
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You must have heat in the shop, or just lazy days?
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| Unobtanium-inc |
Jan 6 2025, 06:40 AM
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#7
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Advanced Member Group: Members Posts: 2,288 Joined: 29-November 06 From: New York Member No.: 7,276 Region Association: None
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QUOTE(930cabman @ Jan 6 2025, 03:57 AM) You must have heat in the shop, or just lazy days? This is what I do at night in my basement by the woodstove. Attached thumbnail(s) 
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| Shivers |
Jan 6 2025, 07:19 AM
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#8
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Senior Member Group: Members Posts: 2,869 Joined: 19-October 20 From: La Quinta, CA Member No.: 24,781 Region Association: Southern California |
Very cool. Are you wood carving these first then make a mold? A vacuum tank or DIY vacuum booth with pump would get rid of those bubbles. (IMG:style_emoticons/default/smile.gif)
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| Unobtanium-inc |
Jan 6 2025, 08:07 AM
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#9
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Advanced Member Group: Members Posts: 2,288 Joined: 29-November 06 From: New York Member No.: 7,276 Region Association: None
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QUOTE(Shivers @ Jan 6 2025, 05:19 AM) Very cool. Are you wood carving these first then make a mold? A vacuum tank or DIY vacuum booth with pump would get rid of those bubbles. (IMG:style_emoticons/default/smile.gif) I've looked into that, the problem is I gang run about 20 a night, so it would slow production to a crawl if I had to put them in a vacuum chamber, unless you have an idea, I haven't been able to come up with one big enough that's cost effective. I take the mold's off of die cast cars. |
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| StarBear |
Jan 6 2025, 09:18 AM
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#10
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Advanced Member Group: Members Posts: 2,093 Joined: 2-September 09 From: NJ Member No.: 10,753 Region Association: North East States
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| emerygt350 |
Jan 6 2025, 06:46 PM
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#11
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Advanced Member Group: Members Posts: 2,539 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
That is pretty neat. In my long cold NY winter I have been playing with freecad, sadly not for 914 parts besides my upgrades to the 3d printed puck horn button.
Here is a fan assembly I designed last week for my old sun workstation. It is so old the original plastic parts fell apart.   |
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| Unobtanium-inc |
Jan 6 2025, 07:42 PM
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#12
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Advanced Member Group: Members Posts: 2,288 Joined: 29-November 06 From: New York Member No.: 7,276 Region Association: None
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QUOTE(emerygt350 @ Jan 6 2025, 04:46 PM) That is pretty neat. In my long cold NY winter I have been playing with freecad, sadly not for 914 parts besides my upgrades to the 3d printed puck horn button. Here is a fan assembly I designed last week for my old sun workstation. It is so old the original plastic parts fell apart. Very cool! |
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| Unobtanium-inc |
Jan 8 2025, 10:51 PM
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#13
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Advanced Member Group: Members Posts: 2,288 Joined: 29-November 06 From: New York Member No.: 7,276 Region Association: None
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I always wondered what would happen if the cars weren't allowed to cure in the mold long enough. I tried a new resin with a longer cure time so pulled these out too soon and left them on the rack, I came back to a Porsche Dali sculpture!
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| rhodyguy |
Jan 9 2025, 08:14 AM
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#14
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Chimp Sanctuary NW. Check it out. Group: Members Posts: 22,205 Joined: 2-March 03 From: Orion's Bell. The BELL! Member No.: 378 Region Association: Galt's Gulch |
Who is posting this?
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| emerygt350 |
Jan 9 2025, 09:22 AM
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#15
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Advanced Member Group: Members Posts: 2,539 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
I think it almost as a winter theme, look a bit like melting ice...
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| burton73 |
Jan 9 2025, 03:11 PM
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#16
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burton73 Group: Members Posts: 3,719 Joined: 2-January 07 From: Los Angeles Member No.: 7,414 Region Association: Southern California
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@ Unobtanium-inc
I have been casting plastic on a professional level for over 50 years and I will suggest how on how you could do this. I use a combination of 3 different casting techniques one is just in the air with no vacuum or no pressure like you are doing now or another is to use a vacuum chamber to remove the bubbles introduced while mixing the plastic but you may still trap some bubbles. You also have to have extra room in the mold to deal with the rise in the volume of plastic as you are de-airing. You could mix first and de-air the mix and pour and you will get less bubbles but with your set up, as it is very cold and need for heat, I would do this. I think you would be well served with a pressure cast setup which is just a paint pressure pot. I use 5 gallon paint pot you can just get it on Amazon.com new for not too much, you only really need about 20 lbs of pressure. If you can run an airline from the shop out there that will work perfect and keeping it close to the fireplace and will warm up the paint pot and it will make your stuff cast faster all you have to do is keep the pressure on it until it sets up and the bubbles disappear because they get so tiny once they have 20 to 30lbs of pressure on them they disappear. I would be a little concern on the flammability of your plastic that you're using and the open flame but you're a big boy you need to figure that stuff out Pictures showing my set up Best Bob B      Old stuff Note the Pelican was cast in this process in a 2-part urethane material. The finish was as good as the mold  |
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| Unobtanium-inc |
Jan 10 2025, 11:54 PM
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#17
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Advanced Member Group: Members Posts: 2,288 Joined: 29-November 06 From: New York Member No.: 7,276 Region Association: None
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There were some complaints about the photography on the first shots, so I got a little fancy!
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| Unobtanium-inc |
Jan 10 2025, 11:55 PM
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#18
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Advanced Member Group: Members Posts: 2,288 Joined: 29-November 06 From: New York Member No.: 7,276 Region Association: None
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More
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| mgp4591 |
Jan 11 2025, 12:45 AM
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#19
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914 Guru Group: Members Posts: 5,527 Joined: 1-August 12 From: Salt Lake City Ut Member No.: 14,748 Region Association: Intermountain Region
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QUOTE(Unobtanium-inc @ Jan 5 2025, 05:59 PM) More more. Those are the best looking ice cubes I've ever seen... Happy New Year! |
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| Unobtanium-inc |
Jan 11 2025, 12:10 PM
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#20
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Advanced Member Group: Members Posts: 2,288 Joined: 29-November 06 From: New York Member No.: 7,276 Region Association: None
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QUOTE(mgp4591 @ Jan 10 2025, 10:45 PM) QUOTE(Unobtanium-inc @ Jan 5 2025, 05:59 PM) More more. Those are the best looking ice cubes I've ever seen... Happy New Year! Not ice, epoxy resin, so will last forever! And they don't rust. |
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