resin molds and equip. - Page 2

dr1zz · #16 03-14-2003, 02:28 PM

spanky, i used that same stuff.........from tap plastics

my mold looked a bit darker blue and it was still soggy in the middle after i thot it cured (1 day to be safe):/ ill give it another shot when i find some time. and what casting stuff are you going to use?!? the clear stuff needs to be de-aired, i dont have one of those things to do it with, so ill prolly have all sorts of bubbles in the resin.

and using clay is horrid, it stuck to everything. i couldnt clean it completely off. i plan on going back to tap plastics for the quick mold stuff.

quick mold half then rtv mold other half, and then remove quick mold and rtv the first half again. i dunno, i just wanna send out my bodies to get em done.......hehehe, any takers?

Spanky · #17 03-14-2003, 03:49 PM

yours was blue because there are two types of catalyst.. the 6 hour demold is blue.. the 24 hour demold is green. as for the clay, i tested it and it worked great...maybe it was just your clay and the type of object you were putting the clay on. as for soggy in the middle, you are supposed to wait at least 24 hours... depending on your catalyst. however you have to be precise in measuring. there is basically supposed to be a 10% catalyst mixture with the silicone, but it will work with a 8% - 12% any more or less and the results may not be desireable..

i am trying to figure out the prices for the micromark molding stuff but i cant get their website to work.. http://www.micromark.com

none of the buttons work...

Spanky · #18 03-14-2003, 04:37 PM

ok, its working now...

denden · #19 03-14-2003, 07:35 PM

SPANKY , THEY CHARGE LIKE $ 20 FOR THE SILICONE .
I JUST BUY IT FROM MY HOBBY SHOP , TO SAVE SHIPPING AND
WAIT TIME . THE SILICONE I'M USING IS A ONE TO ONE MIX
PARTS A + B .

denden · #20 03-14-2003, 07:38 PM

ooPS , IT'S $30 , I GUESS MY HOBBY SHOP IS CHEAPER ,
THEY MUST BUY ENOUGH TO GET A GOOD DISCOUNT .
HERE'S A PIX OF WHAT I USE .

denden · #21 03-14-2003, 07:40 PM

HOW IS THE PICK UP COMING ALONG ?? CAN'T WAIT TO SEE IT .

Spanky · #22 03-14-2003, 09:24 PM

im using the 24 hour mold.. not quite as fast as your molding material.. i will be pouring the bottom half tonite. more pics later. thats cool on the silicone.. i will have to look for some of that.. i was thinking of getting a 5lb bucket. but watned to try the stuff first.. i want to do more vac molding, but i want to try this too.. so hopefully i can get both types of bodys made. although im still a fan of the vac molded bodys.

Spanky · #23 03-25-2003, 06:10 PM

ok, back in town. i will finish the mold for the truck tonite. so far so good..

i also had a chance to try a couple more vac molded bodys.. and they turned out really good.. one is an old vw beatle... the other is the baja beatle. i think i might have posted pics of it somewhere in here.. and better looking mini cooper, which even has the little nubs all around the headlights.. it looks awesome.. i will post pics of this later tonite on my website...

Spanky · #24 03-25-2003, 06:25 PM

i found a new site with some more materials and these seem to be cheaper than any of the previous sites...

http://www.shopmaninc.com/moldmaking.html

check it out.

Spanky · #25 03-27-2003, 03:01 PM

ok, ive finished the mold finally. i noticed that the first part of the mold didnt dry up as fast as i wanted it to, so with the second half i added a bit more catalyst. and it worked like a charm.

now, as for how the first body turned out.. there was only one part of the body that the resin didnt get to. this is partially because of narrowness of the area the resin had to be in. i fixed this on the second one that i poured by cutting the end off a q-tip and auctually working the resin into all the cracks befor placing the second part of the mold on. this worked great. i also elimated all bubbles somehow.

i think i am going to buy some molding compound from these differtn companys and test them out. when i do i will post my results here. so far this silicone from tap plastics that im using is great. and its super pliable..

Spanky · #26 04-11-2003, 02:20 PM

has anyone ever tried using molding rubber. not silicone...

like this kinda stuff

http://www.tapplastics.com/fiberglas...ng/88_rtv.html

its a lot cheaper so you get a lot more for your money..

denden · #27 04-11-2003, 09:13 PM

Sounds good Spanky ,.. it does however say that it is good for one-piece molds , . doesn't say anything about 2 piece molds
like we use . I might try it just for the sake of trying it .

Clint · #28 04-11-2003, 10:45 PM

i have the molding rubber..and it's a pita.

i poured some in a container and put a car face down in it.
it did not dry.. u have to brush layer upon layer onto the clay model. they recommend at least 8 layers.. it took about 6 days to
get 8 layers on the model.

i pulled the rubber off the model and the rubber isnt thick enough to hold it's form..so i backed the mold with some clay to give it rigidity and removed the model.

i dont see a 2 peice mold happening with rubber.

Spanky · #29 04-12-2003, 01:13 AM

humm i have some of that stuff.. thats molding latex rubber..i have some of that stuff, i use it also.. that kinda rubber is the kind used to make molds of peoples faces or impressions of other items..

im talking about the RTV urethane rubber... it works just like silicone.. silicone drys to be that blue or green color. and this stuff drys to be a clear,brownish yellowish color. the guy at tap plastics showed it to me when i stopped in the store, and said that most people use it because its cheaper.... but the silicone works better and lasts longer... (or maybe they just get a bigger cut of money from it)

denden · #30 04-12-2003, 07:30 PM

Spanky , what kind of clear resin are you using ??
And how long until the 56 comes alive ??