This is a remix to fit in another way on the anet a6. Like this the Pen holder itself is detachable and you can take it off if you're not using it. In addition theres a Extruder fan spacer built in with the hook for the pen holder.
I printed it without Support and with a Brim but you can also preferably print it with supports or without a Brim it doesn't really matter...
It will probably not fit at first, I had to file it first but because of that it fits tight enough afterwards (not to wiggle while plotting)
You just need two spare screws to keep the pen in place.
feel free to remix it ;)