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Hello guys,
I m new the to 3d printing and i m planning to build a Kossel. The main reason is price, is the only 3d printing that i can get for 200 USD.
A Kossel has 4 motors, in the reprap wiki, they say to use one with gearbox 5:1 stepper motor for the extruder. But is possible using 4 nema 17 without gearbox?
I cant find a part list for the Kossel, the model that i want to build is with the pulleys. Do you know where i can find it?
Thank you!
My recommendation would be to build an i3 as your first printer. A Kossel is going to be very difficult to get running correctly for a first time experience. You do need a powerful stepper motor for the extruder. I don't think a normal stepper motor is going to be strong enough to drive the filament. There are a number of people here with Kossel's and they will have valuable information for you.
You can use a Nema 17 motor with a geared extruder. I personally use "Greg Wades" geared extruder and it works great. I had to put my own Bowden fitting in, but those are cheap.
http://www.ultibots.com/gregs-wade-e...-hardware-kit/
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
By the way, UltiBots is a great website for RepRap Kossels.
For a bit more, you could also get the new E3D Titan extruder, but you have to buy a "special" bowden adapter for it.
http://www.ultibots.com/e3d-titan-extruder/
http://www.ultibots.com/e3d-titan-1-75-bowden-adapter/