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Modeling in General
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Metal Casting
krow113
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Posted: Thursday, March 03, 2016 - 09:01 AM UTC
Anyone doing any metal casting , white metal or ? The plastic rims for my 1/9 Harley Hillclimber wont survive the lacing process , they are cracking at the slightest manipulation. Resin is out as well. The mould making I can do , just need tech info on the metal properties.
SpaceXhydro
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Posted: Thursday, March 03, 2016 - 10:34 PM UTC
i think you can try search it online or you tube it to find information and tutorials.

If you don't find a suitable tutorial on you tube, you can search books that involve metal casting. I've seen some engineering material books that have information on casting.

Hope this was helpful for you.
matt
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Posted: Thursday, March 03, 2016 - 10:46 PM UTC
there's all sorts of How To's out there...

http://www.instructables.com/id/Lead-Pewter-Casting-at-home/

http://www.cccrow.com/how-2/metal.html
krow113
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Posted: Thursday, March 03, 2016 - 11:05 PM UTC
Thanks you guys!
I spent the morn looking at porn, no, I mean casting supply and videos on you tube. My main question is which metal is best to do my rims in and be able to polish to chrome -like finish.
matt
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Posted: Thursday, March 03, 2016 - 11:29 PM UTC
Aluminum possibly???

https://www.youtube.com/watch?v=e13dafqipFc

https://www.youtube.com/watch?v=4VENnWmQnRQ
krow113
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Posted: Thursday, March 03, 2016 - 11:53 PM UTC



Looked at these the first is ok the second is production spin casting with large dollar equipment.
Thanks!
krow113
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Posted: Thursday, March 03, 2016 - 11:54 PM UTC



...polishing is easy, I don't think casting aluminum is possible though!
Namabiiru
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MODEL SHIPWRIGHTS
#399
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Posted: Friday, March 04, 2016 - 12:15 AM UTC
I would think white metal would be too soft to put a good shine on. I used to do some brass casting back in high school. Probably could be done with some ingenuity and readily available materials, but of course polishing it would result in a brass colored finish...

krow113
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Posted: Friday, March 04, 2016 - 01:08 AM UTC

Quoted Text

I would think white metal would be too soft to put a good shine on. I used to do some brass casting back in high school. Probably could be done with some ingenuity and readily available materials, but of course polishing it would result in a brass colored finish...



This is where the correct alloy will come into play ,there are some that will polish up. Got this on Britmodeller as well ,some good info starting to come in.
Vicious
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Posted: Friday, March 04, 2016 - 02:29 AM UTC
you can polish the white metal or aluminium but dont shine like chrome,the problem is also the casting to be polish have to be perfect without any bubble and is not easy in a DIY cast...you already think about paint with Alcad chrome and polish that?
krow113
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Posted: Friday, March 04, 2016 - 03:59 AM UTC

Quoted Text

you can polish the white metal or aluminium but dont shine like chrome,the problem is also the casting to be polish have to be perfect without any bubble and is not easy in a DIY cast...you already think about paint with Alcad chrome and polish that?

If it don't polish up , something I found with white metal in a small m/c kit , I can go to the metal powders or wax or alclad , yes. The problem with that is the need to jig the hub and rim for lacing the spokes, if the finish is compromised its real hard to fix after all that work.
input appreciated , thank you!
Vicious
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Posted: Friday, March 04, 2016 - 08:50 AM UTC
it polish but not brigth and shine like chrome,more like polish aluminium,the people paint medieval figurine some time instead paint the armor and helmets their polish white metal and then wash with ink or oils
krow113
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Posted: Friday, March 04, 2016 - 08:55 AM UTC

Quoted Text

it polish but not brigth and shine like chrome,more like polish aluminium,the people paint medieval figurine some time instead paint the armor and helmets their polish white metal and then wash with ink or oils



yaya I seen that!
Testors/Jimmy Flintstone's Jade Grenade , everything here is polished kit white metal, rubbed it for hour , it wouldn't get or keep the final shine, a little frustrating:

RChound
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Posted: Tuesday, March 08, 2016 - 08:23 PM UTC
Hello, here are a couple of links to what I call detailed reports with photos, videos and manuals on how to cast aluminum parts safely and effectively. Enjoy:

http://www.rcfair.com/blogs/view_entry/13050/
http://www.rcfair.com/blogs/view_entry/12989/

Good luck!
krow113
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Posted: Tuesday, March 08, 2016 - 09:37 PM UTC

Quoted Text

Hello, here are a couple of links to what I call detailed reports with photos, videos and manuals on how to cast aluminum parts safely and effectively. Enjoy:

http://www.rcfair.com/blogs/view_entry/13050/
http://www.rcfair.com/blogs/view_entry/12989/

Good luck!

Thanks I see aluminum has twice the heat needed to melt as white metal or pewter. I have found the equipment and material to cast my parts , its on the way. Watch the Hillclimber thread on these forums.
krow113
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Posted: Saturday, March 19, 2016 - 08:46 PM UTC
Tools and masters:

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