I just start sharing my experience with building a 3D-Printer here from today. My 1st build will be based on the mechanical kit of the Rat Rig V-Core. V-Slot Core-XY design which I have chosen because it looks sturdy and its reasonably priced and above all it is shipped from the EU. I was contemplating buying a China made Core-XY printer and upgrade it with Duet 2 but gave up on that due to quality and shipping concerns. Here the main reasons why my own build and why Core-XY.
- Gather experience with a setup from scratch
- Learn to create my own print profiles in my slicer
- Core-XY could potentially be very accurate and fast
- Duet 2 because well documented, made in the EU 32 bit controller
- Rat Rig V-Core as compromise between high quality and low cost
- My dream choice would have been E3D's prototype or the RailCore II
I have chosen the following main components.
- Duet 2 Ethernet for the reasons mentioned above, eth over WiFi because I know how unreliable WiFi can be and eth gives me the freedom of both worlds if I need to.
- Titan Aero Hotend because its very compact and of good quality, I am to inexperienced so far risk using a cheap clone etc. The final goal would be a Titan Aqua because I want my printer to be enclosed and that seems to be the way to go to get the heat away.
- 0.9 degree 1.33A steppers for X, Y, ZA and ZB. My choice of 0.9 degree is just a gut feeling, I give it a shot and see what happens. They are not very expensive and I can replace them with 1.8 degree easy.
- For the hot bed I intend to use a E3D 230V AC 300x300 bed, that is a rather expensive single piece of the build so to start I will use a 300x300 24V Silicone heater pad which goes under the original V-Core aluminum bed, once I get anything decent working I change that for the E3D bed with Solenoid.
Here a few pics of where I am so far. Thanks to the RRF Config Tool and the extreme well documented Duet controller I had no issues getting started with testing steppers etc....
I have the axis steppers configured with the actual information of the V-Core regarding pulley teeth and lead screw pitch. I went with 50% current as is recommended as lowest setting from what I have read. All moves and does not seem to lose steps yet. That may well change once i have received the mechanical kit and stuff actually starts moving. The hotend is only partially assembled, I need to finish the mounting 1st as it has to go between stepper and heatsink. So for now I only have the heater, heatsink, termistor and fan going. One issue I noticed was a rather high overshoot when heating. It easy goes over by 10 degree but I have not yet looked into that at all. Just got it going to start with.
So that my state of play for now, I have ordered everything from the EU, mostly Rat Rig and Ooznest. E3D to follow for the bed and nozzle-x but they are so sloooooow....... Amazon fulfilled stuff as temporary Print Surface and Ebay EU for end switches and silicone heater.
Next I get my hotend mount ready and adjust extrusion etc and look into the overshoot when heating the hotend initially.
PS: I am using a Poenix Contact 24V 5A PSU which I had sitting around for now. I have a 24V 20A on order to use with the 24V heated bed once it arrives.