I bought this a while back and just now getting around to trying it out. Instructions needs to be improved, especially when using with the supplied LCD board. The main gripe is the path for the filament, it is too small. I barely got a 1.5mm rod through the guide. When you pay a good price for this, the product should be tested before sent to the customer. Yes, they give you the stl file, so be prepared to modify and reprint the filament guide piece. Also when buying the kit with the LCD board, there should be a header that would connect the sensor to the LCD board (with a voltage regulator for the 5V sensor).
1st board failed immediately. Absolutely followed the included instructions exactly (very easy to hook up). The LCD lite up and started the count down, then a puff of smoke and it died .Contacted Jason on July 20th who said he would replace after testing his on hand stock for two days. It is now 8/16/2018. The replacement Jason claims he sent out has still not arrived. I will give a complete review after I receive and test the replacement