Chain holders for tevo tarantula

I have done some brackets for my tevo tarantula to hold a x-chain and Y-chain.

First of all i have to thank eiPionezero for doing the chain links i have used:
https://www.thingiverse.com/thing:666118

X-chain:
There are 2 files "chain holder 4020" and "x spider tensioner". X spider tensioner is a chain holder but also a x belt tensioner. You will need the small part of the x tensioner:
https://www.thingiverse.com/thing:2815186 here you can download the screw part.
"Chain holder 4020" is for attaching to 4020 profile, so you will need 2 tnuts.
I have tested this ones:
https://www.thingiverse.com/thing:951730

Y-chain:
There are 3 files: "vertical chain holder" that i have screwed to the wood base, "bed chain bracket chain up" (the one i have used for bed connector), and "bed chain bracket down" (not tested).
Difference between UP and DOWN parts are the windows size to be able to press the connector clip when you flip 180º the connector case.

I think the more neat way to manage y chain is to pass it below the base, but since i have implemented dual y rods there is not enought free space to do such thing. So if you are using the Y wheels system or your rods are more separated than mine, you can try "bed chain bracket down" and passing your chain beneath the bed base.

Setup warnings for X chain
-It is compatible with radial fan fang (Lion4H), others i can't say.
-locate your "Chain holder 4020" in the correct place
-Move your nozzle to the left up corner and mesure what chain lenght do you need, mine has 17 links but it depends on where you put your 4020 holder
-If you have LCD or spool holder attached to the upper profile you should move it to the left or relocate (check it by yourself)

Setup warnings for y chain
-Bed bracket has 2 windows, one is for checking if the connector is correctly pluged in and the other is for the connector clip (i dont know the name of this).
- You can manage to remove the wires pushing down the pins (photo), but remember to lift it up before you insert inside again.
-If you are using the "bed chain bracket chain up" (the same i am using) you have to put the correct amount of chain links, disable stepper motors and drag the bed all the way near to you, at this point the chain MUST lie horizontal otherwise it could hit the X 4020 moving profile.

Printing:
I have printed it in ABS with 50% infill at 70mm/s i have used supports in the bed bracket, but maybe in PLA with layer fan is not needed you can try it.
I ve also used supports in the chain links.

If you are try "bed chain bracket chain down" just let me know if it works.

Enjoy!

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