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  Topic: What about clay as a vacuum forming material?
clonesix

Replies: 4
Views: 4329

PostForum: Injection Moulding & Other Technology   Posted: Mon Mar 22, 2010 10:02 pm   Subject: What about clay as a vacuum forming material?
Clay works very well for one pull, sometimes two. After that, you need to pour stone into the pull and make a more permanent buck.

I use clay all the time. No, it doesn't need to be hard, I vac o ...
  Topic: Rotational Casting machine home build
clonesix

Replies: 12
Views: 6934

PostForum: Injection Moulding & Other Technology   Posted: Fri Mar 19, 2010 11:24 am   Subject: Rotational Casting machine home build
Test run done.
As you can see, it is held together with clamps. I must drill bolt holes before this is finished, and I have more work to do.

I also made a new mold of my helmet model. I made ...
  Topic: General Mold, Casting and Buck Questions.
clonesix

Replies: 8
Views: 4492

PostForum: Mold Making Tips   Posted: Tue Mar 16, 2010 9:40 pm   Subject: General Mold, Casting and Buck Questions.
Oh good, I am glad Jim asked, and I am not the only person who was confused by the description.

What are you trying to make/mold? A picture says 1000 words.

You want to mold something for fibe ...
  Topic: Just completed my Rotocasting machine!!
clonesix

Replies: 14
Views: 12084

PostForum: Injection Moulding & Other Technology   Posted: Sun Feb 21, 2010 10:00 pm   Subject: Just completed my Rotocasting machine!!
Nice work. Let us know how the new motor works for you. I am building one of these myself.
  Topic: Rotational Casting machine home build
clonesix

Replies: 12
Views: 6934

PostForum: Injection Moulding & Other Technology   Posted: Fri Feb 19, 2010 9:23 pm   Subject: Rotational Casting machine home build
Add one more frame and I am moving right along. I still have some more work to do drilling holes and mounting bearings.

http://farm3.static.flickr.com/2802/4371311727_834c4c2f7f_o.jpg
  Topic: Rotational Casting machine home build
clonesix

Replies: 12
Views: 6934

PostForum: Injection Moulding & Other Technology   Posted: Sun Feb 14, 2010 5:30 pm   Subject: Rotational Casting machine home build
That was the problem jdougn: trying to weld dirty metal. I thought the flux core wire was enough. I put the $15 grinder to work and prepared the surface properly. The welding went better from there ...
  Topic: Rotational Casting machine home build
clonesix

Replies: 12
Views: 6934

PostForum: Injection Moulding & Other Technology   Posted: Sat Feb 13, 2010 12:19 pm   Subject: Rotational Casting machine home build
Sad to report that the first attempt at welding was unsuccessful. I don't think the rented welder is powerful enough to weld the 16 gage steel that I got from the surplus yard. Its a Millermatic 135 ...
  Topic: Is there room for Hannibal Lecter ??
clonesix

Replies: 7
Views: 2163

PostForum: Introduce Yourself   Posted: Mon Feb 08, 2010 9:58 pm   Subject: Is there room for Hannibal Lecter ??
Hi Ed,

Welcome to the forum. Take a look through here: http://support.knowlton.ohio-state.edu/files/FormechVacuumGuide.pdf and see they answer some of your questions. They don't list lexan, but ...
  Topic: Rotational Casting machine home build
clonesix

Replies: 12
Views: 6934

PostForum: Injection Moulding & Other Technology   Posted: Mon Feb 08, 2010 9:27 pm   Subject: Rotational Casting machine home build
I fielded this question to several people thanks to the internet, and the answer came back universally to let the drive shaft pass through the timing pulley, and run a screw though the pulley, into th ...
  Topic: Rotational Casting machine home build
clonesix

Replies: 12
Views: 6934

PostForum: Injection Moulding & Other Technology   Posted: Sun Feb 07, 2010 5:16 pm   Subject: Rotational Casting machine home build
So far, I have been drawing this up and selecting parts from a catalog. I may have to alter my design if I can't figure out how to keep th etiming pulley stationary while the shaft running through it ...
  Topic: Rotational Casting machine home build
clonesix

Replies: 12
Views: 6934

PostForum: Injection Moulding & Other Technology   Posted: Fri Feb 05, 2010 7:48 pm   Subject: Rotational Casting machine home build
This has been on my mind for some time and I had previously believed it to be cost prohibitive due to the face that I don't own any of the required equipment. Upon dicovering that I can rent a metal ...
  Topic: Mold Making Question???
clonesix

Replies: 5
Views: 1507

PostForum: Vacuum Forming & General Stuff   Posted: Mon Dec 14, 2009 10:41 pm   Subject: Mold Making Question???
I agree with Vacuform about using water clay, as it is what I use for all my sculpts. I will add that it blocks out very quickly and solidifies as it dries. You can let the form dry until it is &qu ...
  Topic: Durable Mold Material Questions
clonesix

Replies: 18
Views: 2871

PostForum: Vacuum Forming & General Stuff   Posted: Thu Jul 09, 2009 11:11 pm   Subject: Durable Mold Material Questions
for a cost effective method, Ultracal is great. It is gypsum with 20% Portland Cement. It is very durable, and as an added measure, you can cast additional material into one of your pulls, and have ...
  Topic: In here, a total noob builds a machine
clonesix

Replies: 55
Views: 9416

PostForum: Vacuum Forming & General Stuff   Posted: Sat Jun 27, 2009 9:47 pm   Subject: In here, a total noob builds a machine
That looks real nice. What kind of channel stock and linear actuators are you using, as I wanted to do something like that, but lack the knowlwedge.
  Topic: DIY Hot Knife
clonesix

Replies: 4
Views: 1989

PostForum: Vacuum Forming & General Stuff   Posted: Sat Jun 27, 2009 9:17 pm   Subject: DIY Hot Knife
Welcome to the forum. I am glad you didn't hurt yourself with your first try.

Look here for a hot wire explanation:
http://www.hhhh.org/~joeboy/resources/hotwire_foam_cutter/hotwire_foam_cutter ...
 
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