Starship Modeler Discussion Forums

have you ever tried it?





*I had to laugh when i clicked onto the "Casting Techniques" and saw how much rubber material they where wasting to make that bridge piece

I am looking for somethign that i could cast (if possible) in rubber molds. These rubber tires will be used on the wheels of my 1:6 scale Tiger tank I have gotten samples from Smooth-On: 45D 65D C1515 (black in color) C1520 (black in color) not good enough, they are slightly bendable if at all. this...

In the past I have heard about this Klean Clay, that was safe to use in microwave's to warm and soften up for setting up for molds without blowing the microwave I now need some more clay for some bigger molds and was wondering if the stuff being sold here is the right stuff to get? http://cgi.ebay.c...

the problem as of right now seems to be the catalyst being too cold as the molds from last night are nice and set up now and i hope to try to get the second half of the molds done tonight.

this would be great if that's all it was (cold catalyst) as i can start getting back on track.

well, the air is a bit dry in the house, but i thought if anything the lack of moisture would be better as it would help dry the surface of the mold. i could leave the next set of molds int he basment for curing as the basement is a touch damp right now. as to the color and such, i use a paint stick...

the mixing is fine, even if i an off by a smidgen, it's forgiving. now when iwent to go check then just a little while agao again, they felt pretty good. Then about 10 minutes ago, i gave my mother a piece of completely cured rubber to touch and then had her touch the ones i just did and she sais th...

what a let down.............. I just went and checked the molds this morning and they still have that tacky / gooy feel to them when they are touched. I thought for sure that warming up the rubber and catalyst would have helped......... I did get a new tub of rubber the day before. It's still all in...

Since it has gotten cold out, i have been having a devil of a time trying to getmy molds to set up like they should in 24 hours. thay are now taking uop to 4 days and even then, they still seem to fell not completely cured to the touch. this is what i have been doing: I do all of the mold pouring in...

sounds like i may have to pay polytek a visit.

did you have to use there blue colored rubber for the casting? what about heating the casting durring curring? don't think i can put a lightbulb into my pressure tank while curring - don't think the tank will want to seal to well

is that resin used for water effects? or is it a real resin for casting?

I wouldn't mind a 10 of 15 gallon tank to add to my stock

I think i mix 1 - 1.5 pounds at a time

oh and when i get a tank: I always replace the Pop Valve for used tanks, it's a must. for new tanks (such as from HF) the new valves i put in seem to release better i have been running my tanks at about 45 - 50 psi. i use smooth-On smooth cast 321 resin and have noted that sometimes 30 just didn't s...

okay, first off, why do you need a clear lid on you tank when you vaccum? I just put the batch of mixed rubber into th tank, set the timer for 7 - 8 minutes and walk away. as for tanks, i have bought a few of them tanks from HF. My first tank was a Sears painters tank and that was hard to find. now ...

Sorry kem can't help none. I started out using Alumilite quick set rubber, then there HSII & III. I was using their slow set resin until they stop selling it, then I went to Polytek until their rubber bonded to one of my masters, then I went to Smooth-On. i would run to their Easton building abo...

I think i had Polytek (I think) clear resin before, but you need to use a blue rtv rubber with it. i had someone do a few sample casts, but the rest was tossed out (the resin) as it only sat for the next few years. my problem is, heating up the molds and tanks, i have one tank, but it won't go above...

I have spoken to one of the Tech's at Smooth-on and they tell me i need a resperator, a vaccum chamber, a pressure pot. what they tell me, it's a bit of work just to use and it seems to be on the harsh side of resins. I am just wondering, what clear resins do any of you use. How does it tuen out? wh...

okay, I have one of them mini chop saws as seen here: http://www.ares-server.com/Ares/Ares.asp?MerchantID=RET01229&Action=Catalog&Type=Product&ID=15218 i was just doing a search on ebay and saw these blades up for sale: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=170031969128&...

Well the Baking did the trick, everything is working out just fine. I found the papers on the rubber (they were in the dambest place) and it called for 4 hours at 212 degrees. the only problem now is, the oven smeels of the rubber! I have heated it up 3 times now and the smell is just about gone.......

Well i got the second batch of molds heated up this morning. I casted with the ones I did yesterday, so in a little while, i'll be finding out if all has been corrected or not.

Well I dug and dug and dug and finaly found the papers that come with the mold material. it states to either leave the molds sit ina warm room for a couple of days of heat the in the oven for 4 hours at 212 degrees. I have them sitting ona cookie tray (covered it with foil) and have the molds sittin...

DasPhule And dude, stop wiping the molds with alcohol! That is what is inhibiting the curing of the resin to begin with. Only release agents should touch the mold, ever. sorry, i'll have to read what I posted earlier to make sure it's readying the way I was thinking, but........ What i was saying a...

cobywan And no. Not all resin kits are like this. There are companies that make resin kits that actually know what they are doing. Yes, some of us do try to know what where doing (if not, some of us ask questions on the message boards here). I normally just buy regular automotive primer either from...

i thought of a few other questions since that post....... when i bake, do i need to worry about scrubbing out the oven afterwards or is it safe to cook in afterwards? I'd be baking with the oven blower on. also, since I have used these molds already and have used spray release on them, i'd clean the...

Thanks for the info. I am trying to find the papers that came with the rubber (no matter where i put something [mainly to read] it always gets moved and theri answer is "I don't know where it was put, maybe if you just put it away", hell, the reason i left it out was to read it!), if not, ...

I have started using Polytek's resin (about 3 - months ago) Easy Flo 65 and like it. I'm about to finish my current 2 gallon kit and order more. I thought since I am using their resin, I'll try some of their rubber mold material too (why not, just order all of my supplies from one place). I bought a...

is it bubbles or holes?

is it the same little holes showing up or new ones?

sounds like the kit wasn't pressurized when cast.