Driver Casting Repro
Driver Casting Repro
Hi All,
My first attempt at a pattern and repro. Next step is to pour the 8002 again and get the plastic pattern. Thoughts/comments?
-jlakes85
My first attempt at a pattern and repro. Next step is to pour the 8002 again and get the plastic pattern. Thoughts/comments?
-jlakes85
- Greg_Lewis
- Posts: 3020
- Joined: Wed Jan 15, 2003 2:44 pm
- Location: Fresno, CA
Re: Drivre Casting Repro
My thoughts and comments are: Congrats. Folks who haven't done that don't know how much work goes into it.
Greg Lewis, Prop.
Eyeball Engineering — Home of the dull toolbit.
Our motto: "That looks about right."
Celebrating 35 years of turning perfectly good metal into bits of useless scrap.
Eyeball Engineering — Home of the dull toolbit.
Our motto: "That looks about right."
Celebrating 35 years of turning perfectly good metal into bits of useless scrap.
Re: Drivre Casting Repro
Looks nice. Will this be in iron?
David
David
Re: Driver Casting Repro
Thanks Dave, yes this will be gray iron.
Greg, I had to use 2 kwik cast gallon kits to get enough material..I made the pouring window probably by seconds..even with a few dry runs and a clean floor
Greg, I had to use 2 kwik cast gallon kits to get enough material..I made the pouring window probably by seconds..even with a few dry runs and a clean floor
Re: Driver Casting Repro
There were some spots where it grabbed for one reason or another. Can anyone recommend a method to check over the negative before I pour the positive to avoid future issues?
Re: Driver Casting Repro
Do you have enough draft on the pattern to let it release?
Fred V
Pensacola, Fl.
Pensacola, Fl.
Re: Driver Casting Repro
Hi fred,
Yes, I should be good on the major surfaces and I did use beeswax in the questionable corners. I think I screwed up by not getting the actual BCC release agent. I thought I could skate by using a furniture polish, as did McCord on YT when he poured that Wright brothers engine, but they was to release the pattern from the sand, not repro plastic..lesson learned l and I still have a master pattern to tell the tale..
Yes, I should be good on the major surfaces and I did use beeswax in the questionable corners. I think I screwed up by not getting the actual BCC release agent. I thought I could skate by using a furniture polish, as did McCord on YT when he poured that Wright brothers engine, but they was to release the pattern from the sand, not repro plastic..lesson learned l and I still have a master pattern to tell the tale..
Re: Driver Casting Repro
I assume the pattern was a 3D-printed model. These often have ridges or lines on the surface, which must be filled with paint or sanded off to get a clean pull from the mold. Is this a problem with yours?
Dan Watson
Chattanooga, TN
Chattanooga, TN
Re: Driver Casting Repro
Hi Dan,
This pattern is made from poplar, piece by piece. Some of the joints were challenging to fit and might have some issue areas. I'm going to order the proper BCC release agent before pouring the repro
This pattern is made from poplar, piece by piece. Some of the joints were challenging to fit and might have some issue areas. I'm going to order the proper BCC release agent before pouring the repro
- Trainman4602
- Posts: 3482
- Joined: Sat Oct 16, 2004 9:26 pm
- Location: New Jersey
Re: Driver Casting Repro
Hi have made several videos about this process on you tube watch them
ALLWAYS OPERATING MY TRAIN IN A SAFE MANNER USING AUTOMATIC AIR BRAKES
Re: Driver Casting Repro
Have you considered ductile instead? Far more reliable.
H
Wise people talk because they have something to say. Fools talk because they have to say something.