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Molding and casting - a journey


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#76 rvec

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Posted 10 March 2021 - 01:52 PM

I used the next cast to simulate the Sebring winner in 67 (#1 in yellow).  I made the cast light and added carbon fiber for strength on the inside of the body.  I used a product called Git Rot as the low viscosity epoxy to adhere the carbon fiber.  The process only added 3-5 grams to the cast and I was happy with that. I was not really happy with the Git Rot product.  I don't think it dried hard enough and took several days to harden. So for my next cast I will use a West Marine epoxy instead.  I will keep you posted.  In the interim, I will test the Sebring car for durability.

Attached Images

  • Sebring_2.jpg
  • Sebring_1.jpg

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#77 James Wendel

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Posted 10 March 2021 - 02:45 PM

Rich, let me recommend waxed paper.  See my post #7 here:

 

http://slotblog.net/...ican-park-2016/

 

The waxed paper allows you to squish the epoxy through the carbon fiber, smooth it out, and saturate all the loose ends.  When you pull off the paper, assuming it pulls away clean, you get a smooth surface.  If you use a clear resin, it can be quite beautyous.


You can't always get what you want...

#78 rvec

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Posted 15 March 2021 - 10:55 AM

James,

Thanks.

 

Below are images of the finished Sebring car

 

S_3.jpg

 

S_4.jpg

 

S_5.jpg


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#79 Alchemist

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Posted 15 March 2021 - 09:51 PM

That's so nice Rich!

 

How does it run/handle please?

 

Ernie


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#80 rvec

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Posted 15 March 2021 - 11:56 PM

That's so nice Rich!

 

How does it run/handle please?

 

Ernie

 

Both Chassis handle great.  One has a better motor but handling is quite good.  The Sebring car has a 2NASTE chassis.  See the link The fully adjustable 1/24 chassis I have built for our club. - HRW (hrwforum.com) We will see if the carbon car is durable.  It will be run in competition


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#81 Revtor

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Posted 16 March 2021 - 05:55 PM

Rich, nice writeup and results!!  I love hoe every tiny tiny details comes through with these products.  Moldmaking is a great rewarding process.  I've done a few HO scale bodies using Matchbox cars as models.  Very rewarding to turn something from the junk drawer into a running slot car!!


~ Steve Maietta

#82 rvec

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Posted 16 March 2021 - 06:39 PM

Rich, nice writeup and results!!  I love hoe every tiny tiny details comes through with these products.  Moldmaking is a great rewarding process.  I've done a few HO scale bodies using Matchbox cars as models.  Very rewarding to turn something from the junk drawer into a running slot car!!

 

Thanks Steve:

The real test will be when these are raced. I hope that the carbon fiber makes them quite durable.  I will test with the Sebring car and another I am working on.  Both have carbon fiber reinforcement 


Rich Vecchio


#83 rvec

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Posted 26 March 2021 - 06:49 PM

I just completed another MKIV with carbon fiber reinforcement. It has a Ford France livery.  Although Ford France did run GT40s, they were never entrusted with a MKIV.  I plan to use the Sebring car and the Ford France MKIV for durability testing. Both are reinforced with carbon fiber. I do plan on casting at least two more MKIVs - the Mario Andretti car and the Denny Hulme car but only after durability testing. Below are a few images
 

3_40s.jpg
 
FF_MKIV_1.jpg
 
FF_MKIV_2.jpg
 
FF_MKIV_3.jpg


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