I'm a newbie to casting and would like to use Dow Corning type J rtv for some small molds. Small as in 8 to 20 cubic inches. I have a vacuum pump ( venturi...
5774
Bill Roy
timberbeast@...
Sep 2, 2000 5:41 am
Peter... If you use Pyrex, go for one of the nearly round-bottomed bowls, not a flat-bottom baking dish. I have both a venturii vaccuum and a pump, and the...
5775
Ben Damon
bend@...
Sep 2, 2000 5:11 pm
Pat I now know what you mean about the air bubbles, whoa it's like a New Years eve party toast! So now I guess I will look in to vacuum casting. Any ...
5776
L&D Fusello
labelle@...
Sep 4, 2000 11:01 pm
... New Years ... Any ... requires ... thin cross ... recommend the ... your ... railroad kits. ... RTV molds? ... clear ... any...
5777
Gene Halder
reman@...
Sep 4, 2000 11:39 pm
A question for the list. I am going to attempt some pressure casts with resin and would like to know the recommended gel time necessare so that you have ample...
5778
John Lea
jdl@...
Sep 4, 2000 11:44 pm
I was all thumbs when I started with a 3 minute PUR. I had a heck of a time getting it mixed and in the pot with full pressure. I switched to a 7 minute and...
5779
L&D Fusello
labelle@...
Sep 5, 2000 1:23 am
5780
Gene Halder
reman@...
Sep 5, 2000 4:18 am
John: Thanks for the info on gel time but now you created another question. How are you using the vacuum? Gene ... From: John Lea...
5781
John Lea
jdl@...
Sep 5, 2000 10:34 am
Gene, I was flying blind when I started and probably still am. I degas the PUR mix and then degas it again in the moulds. I do the same with the RTV mix. I...
5782
lawrence jackman
ljack70117@...
Sep 5, 2000 12:11 pm
Why would someone from the RTV Company tell you not to degas when the mix is in the mold?????? I always did and had no problems. Larry...
5783
John Lea
jdl@...
Sep 5, 2000 12:29 pm
Larry, Sorry I wasn't clear.. I degas the PUR mix in the mixing bowl and in the mould. I do the same with the RTV. I degas the rubber after mixing it, then...
5784
lawrence jackman
ljack70117@...
Sep 5, 2000 10:27 pm
I was taught that when you reach full vacuum, you do not vacuum more 45 seconds. Then you do not have to worry about boiling off important stuff in your RTV or...
5785
John Lea
jdl@...
Sep 5, 2000 10:38 pm
It may be that stuff is boiling off but as I said I have not had any problems to date that I could attribute to that. I do have a question. I an being eased...
5786
Ginger Chavez
gchavezgchavez@...
Sep 6, 2000 3:34 pm
Hi Casting Group, Once again, here I am with more questions. I am looking for a very stretchy silicone to make a mold of my little critters. I'm sure if my...
5787
Miracle Castings Inc.
miracle-castings@...
Sep 6, 2000 3:37 pm
Hi! That's a good question. I wouldn't recommend it, since RTV rubber may contain moisture, which could freeze at cold temperatures, possibly causing damage....
5788
Shawn Spradling
tigger3@...
Sep 6, 2000 3:54 pm
Hi Ginger, Dow Corning makes a mold making silicone called HS III and HS IV. These two different silicon's are very soft and "stretchy"; I use to make some...
5789
Ginger Chavez
gchavezgchavez@...
Sep 6, 2000 6:03 pm
Shawn, Thanks for your reply. Is HS-IV stretchier than HS-III? And do I need a vacuum chamber? I'm using Alumilite to cast them. Love that stuff. Thanks for...
5790
Gene Halder
reman@...
Sep 7, 2000 4:10 am
... From: Shawn Spradling <tigger3@...> To: casting@egroups.com <casting@egroups.com> Date: Wednesday, September 06, 2000 8:55 AM Subject: Re: [casting]...
5791
Tony Darrah
tdarrah@...
Sep 7, 2000 3:07 pm
I've just been reading the latest issue of 'Model Engineer's Workshop' which is a British magazine. In it, one author has built himself a 'Vacuum Chuck' to...
5792
kent kinal
kinalk@...
Sep 7, 2000 10:31 pm
Just a few other products you might be interested in are Silicones INc., GI-1110; SynAirs SIL 12 and CRhodias VI SIL V1062. The SIL 12 has a Shore A Hardness...
5793
Tamara Johnson
tkjohnso@...
Sep 7, 2000 10:36 pm
I recently bought a starter kit to try pewter casting. I'm wondering what substances a mold can be made of that will work with pewter. Also, I came across a...
5794
afisherjr@...
Sep 7, 2000 11:25 pm
In a message dated 9/7/00 3:38:16 PM Pacific Daylight Time, tkjohnso@... writes: << I recently bought a starter kit to try pewter casting. I'm wondering...
5795
Doug McClure
dmclure@...
Sep 8, 2000 10:20 am
... From: Tamara Johnson <tkjohnso@...> To: casting@egroups.com <casting@egroups.com> Date: Thursday, September 07, 2000 6:36 PM Subject: [casting]...
5796
ROBERT MITCHELL
robert.mitchell@...
Sep 8, 2000 11:35 am
I will be on holidays from September 11 to October 3. If you need any help then please contact either: Jim Pruss Asset Management OHS&R Manager on 0418 860...
5797
ROBERT MITCHELL
robert.mitchell@...
Sep 8, 2000 11:48 am
I will be on holidays from September 11 to October 3. If you need any help then please contact either: Jim Pruss Asset Management OHS&R Manager on 0418 860...
5798
ROBERT MITCHELL
robert.mitchell@...
Sep 8, 2000 11:49 am
I will be on holidays from September 11 to October 3. If you need any help then please contact either: Jim Pruss Asset Management OHS&R Manager on 0418 860...
5799
ROBERT MITCHELL
robert.mitchell@...
Sep 8, 2000 11:50 am
I will be on holidays from September 11 to October 3. If you need any help then please contact either: Jim Pruss Asset Management OHS&R Manager on 0418 860...
5800
ROBERT MITCHELL
robert.mitchell@...
Sep 8, 2000 11:50 am
I will be on holidays from September 11 to October 3. If you need any help then please contact either: Jim Pruss Asset Management OHS&R Manager on 0418 860...
5801
ROBERT MITCHELL
robert.mitchell@...
Sep 8, 2000 11:51 am
I will be on holidays from September 11 to October 3. If you need any help then please contact either: Jim Pruss Asset Management OHS&R Manager on 0418 860...
5802
ROBERT MITCHELL
robert.mitchell@...
Sep 8, 2000 11:52 am
I will be on holidays from September 11 to October 3. If you need any help then please contact either: Jim Pruss Asset Management OHS&R Manager on 0418 860...
