I made some heaters for my lubersizers using 3/4" thick aluminum flat bar & 40 watt cartridge heaters (110v). They are pretty simple to make. I bore a 3/8" diameter hole in the end of the bar to the length of the cartridge heater and add a receptacle box & dimmer switch & 3-prong cord. If you use a PID simply drill & tap the bar for the thermocouple at the location you choose. Make sure that the thermocouple is of the "K" type. The aluminum bar is drilled for the mounting bolt pattern on your press. McMaster Carr has a plethora of cartridge heaters of various wattages & dimensions. The aluminum flat bar I got on ebay.
If someone else had of done to me what I did to myself . . . I'd have killed him. Humility is an asset. Heh - heh.