Ultimate TEVO TARANTULA upgrade.

Ultimate TEVO TARANTULA upgrade.
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This thing is a result of months spent on upgrading my Tarantula. Wanted printer which is reliable and more rigid than stock one. Therefore all acrylic parts were removed and replaced with elements designed from scratch. I did reuse some brackets designed by thingirob. See description below.

X and Y axis
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To get rid of all play introduced by stock wheels I decided to switch to mgn9 linear rail on x axis and mgn12 linear rail on y axis. X and Y axis parts include belt tensioners. There are two versions of y axis belt tensioners available. Use Y_YAxisBeltTensioner1.stl Y_YAxisBeltTensioner2.stl if you want it to be easier to use or Y_YAxisBeltTensionerShort.stl if you want to fit your Tarantula into IKEA STUVA cabinet (I use it as enclosure). To be able to mount linear rails make sure you have some t-nuts with m3 thread. Mgn9 rail should ordered in version H. Mgn12 rail shoul