Well, I finished the injection molder last weekend and made the first mold. A simple slug mold to turn scrap plastic into 1/2" slugs to feed back into the machine. I have images of the finished machine and the first mold and some pieces injected with it.
I do have some changes to make now that it's working. I'd like to drop the heater cartridge a little deeper towards the nozzle and I need to fix an oversized bore in the upper bushing block (poorly sharped drill bit). I'd like to change the jack screw to a toggle clamp for faster, easier clamping of the molds.
The thing gets pretty hot so I have it on some firebricks. The bottom plates only gets warm but the upper plate get a couple hundred degrees easy. I need to wrap parts in some thin insulator material. The top plate makes a pretty good place to set a mold to preheat it. I've read some people use a toaster oven to pre-heat molds.
overall it's a pretty easy machine to make and operate. You have to know where your hands are when you move around it when it's up to heat. I got some metal donated but i bought the controller off of Ebay and the heater cart from Gingery. Over all I have about $70 raw cash in it, plus tooling that I just had to have to finish it. What a shame and no, I'm not married.
I do have some changes to make now that it's working. I'd like to drop the heater cartridge a little deeper towards the nozzle and I need to fix an oversized bore in the upper bushing block (poorly sharped drill bit). I'd like to change the jack screw to a toggle clamp for faster, easier clamping of the molds.
The thing gets pretty hot so I have it on some firebricks. The bottom plates only gets warm but the upper plate get a couple hundred degrees easy. I need to wrap parts in some thin insulator material. The top plate makes a pretty good place to set a mold to preheat it. I've read some people use a toaster oven to pre-heat molds.
overall it's a pretty easy machine to make and operate. You have to know where your hands are when you move around it when it's up to heat. I got some metal donated but i bought the controller off of Ebay and the heater cart from Gingery. Over all I have about $70 raw cash in it, plus tooling that I just had to have to finish it. What a shame and no, I'm not married.
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