21

Have you thought about the calibration involved with a delta machine? It is quiet tricky and can be very time consuming. The kossel Xl’s don’t have fantastic frame rigidity so I would recommend bracing the frame. You can get by without it but I definitely recommend it, especially if you’re throwing more weight around with a second hotend on the print head.

Have you read up on the limitations of running a delta from an Arduino? (or any other electronics which use the Atmel2560 chip). Delta’s offer a large build area for the price and very good speed (given a good frame or else you lose accuracy). The catch with delta’s is calibration, and the load on the microcontroller which has to process all the motor steps to a non linear coordinate system, which will lead to slow downs unless you get something faster, eg a smoothieboard which has an 32 bit ARM processor that runs at 120MHz. Much faster than the arduino’s 8 bit Atmel2560 processor with its 16kb of ram at 16MHz.

Alternatively you could build an prusa i3 type machine. They are very easy to calibrate and rather easy to put more hotends onto.

22

I agree on the visual part, Delta’s look way cooler than cartesians! None of the jerky back and forth movement, all just smooth travel around the bed.

23

It doesn’t matter, just get in on the ground floor and start printing . I have two MakerBot Fifth Gens, and two self made Deltas. I learn a lot from both, not to mention the others ive played and experimented with.