Try macinerycenter.com. We have bought used macines from them with good results. I work at a plant with 24 injecton machines ranging from 75 to 400 tons. I keep up and do changeovers to 45 molds with 2 - 96 cavitys each.
Tod ----- Original Message ----- From: "TyngTech" <steve...@gmail.com> To: rctankcombat@googlegroups.com Sent: Wednesday, July 25, 2012 12:22:16 PM Subject: [TANKS] Re: looking to step up to plastic injection I know the type of machine your talking about. I used to operate one at my first job (molding electrical connector housings). I imagine a small used injection molder could be found cheap, probably for scrap value. The issue is tooling costs. When I built the first TTS and had started my know defunct website selling tank parts. I looked into injection molding TTS track pads. I was getting estimates of 6 to 10K to produce the tooling. I dropped the idea at that point. One thing I learned from my retail experiment. Prospective R/C Combat tank builders are the cheapest bunch of SOB's on the planet :-).... Selling to this group is no way to an early retirement! Steve Tyng On Tuesday, July 24, 2012 11:32:36 PM UTC-4, odyssey...@aol.com wrote: Some of you who know something about me, know i do work with resin castings and produce sci-fi kits. Recently i have begun to look into stepping things up, taking me from resin kits to styrene kits (or at least some of them), but i am also looking at other things such as tank related parts :) I know i can't do everything (producing useable parts that everyone could use for every tank), but i could start to do some. The plastic injectors i am looking at all have a mold size of about 3" square but might know someone that might be able to do mold blocks up to 6" (still have to talk more to them about some parts). at first i was thinking of using regular styrene , but thought i'd need to add some sleeves into the links to help prevent wear, but then starting looking into some harder materials that i might be able to use (still checking) such as nylon. they would hold up much better than regular styrene, and i don't think they would need any kind of sleeve cast into them but think there is a possible draw-back - not being able to be painted (unless someone out there know's otherwise). another limitation is the amount of material required to make a part, the injectors i am looking at have a limit of 1 oz of material (think that's liquid, not weight), so some parts might be out of the question to make - for now. if the other person would be willing to make some of the bigger parts for me, those i think would be some road wheels and sprocket wheels - oh, while i'm thinking of road wheels, there is a material that is used to make rubber like gaskets that i was thinking of for making the rubber tires for the road wheels, but haven't obtained a sample of it yet to see if it really is closer to rubber, if so, we have rubber tires (again, limited only by size and volume of material needed). the sprockets i thought could be done in nylon as well as i think that would hold up fairly well but still need to work out the hubs to mount them to and the mounting them to the drive shafts (and hope they don't break) the parts would be in 1:6 scale as to the tanks i am thinking of looking into for parts....but would have to do research to see if the track links would be feasible to make and use Tiger (but of course, I have one) Sherman (i have no real knowledge of them so i don't know if one track fits all) Abram (not 100% sure as i don't know if there are any real variants of the tank or just the one, again, i have no knowledge of this tank). Stug as it's still several months away before i can think about getting an injector, i do know i'll be getting one, so i might as well start looking into other subjects that i can do using the injector. I don't want anyone to think that these would be a cheap things to buy as i have been pricing nylon and it's a few dollars a pound for it and the molds could cost me $500 - $1500 on up. now parts such as hatches and such would be made out of styrene, this way they can be easily painted along with the rest of your tank. the nylon parts (if i can get everything worked out) i wanted to see about maybe trying for 4 colors, black, light gray, medium gray and dark gray. i was sort of leaning towards the gray as i thought if they could be painted and the paint were to wear off, the gray could sort of be a bare steel color (or i could look into an orange brown for a rust color if i could get custom colors somehow). oh and the road and idle wheels that i do make, i plan to make them to accept bearings (i think i can get a good supply of them so i could include them with each wheel and also as replacement parts). i would even consider a generic track design if i can get things to all work out, i think some of this could be a big boost for future tank building. Chris -- You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat -- You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat+unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat
