>>10361663Now with that safety scare out of the way:
>when the nozzle is pressed against the aluminum mold frame, the temp reading drops quicklyI agree the heat probe is not positioned very well. Personally I just note down the the temperature before it gets into contact with the aluminium mold frame. While the nozzle may cool the barrel wont really and you should still have some molten plastic, but I work with ABS so it will naturally be pretty high temperature for me personally. If your really worried about the heat measurement I would invest in a not too expensive infared thermometer to keep track of the barrel temperature.
>bottom of the inside of the chamber also results in a lot of the melted pellets just getting stuckDon't get me started on that. The problem is the injector uses a plunger instead of a corkscrew arrangement that a lot of the more high end injectors use. I personally just keep feeding and then after a session I let it cool and take the melted pellets that got stuck, try to break them down and then feed them in the opposite side to melt during the next injection so they are used up instead of getting stuck again.
>What pellets/plastic are you using?ABS. Haven't really tried softer materials as I like the functionality that comes with ABS and how widely available it is. I have used Lego bricks funnily enough as well as some cheap pellets. Only problem with ABS is that it does not really have a melting point like most plastics, but I have been doing a lot of experiments at around 120-150 degrees Celsius with reasonable success, but I have yet to test it in 3D printed mold. Despite it melting at lower temperatures it is recommended at 200 degrees Celsius for injection, but there is no UV resin I know of that is designed to withstand that sort of temperature in mind so I am debating to switch to softer materials.
