anti backlash nut

Reason for this creation
I created my own CNC machine with cheap T8 spindles. Although the default anti-backlash nuts with springs are working they are not very good. The maximum load is equal to the pressure of the spring. Although a stronger spring with increase the load it will also increase the turning resistance.

How my design works
My design is without springs but the play can be reduced to almost zero at least i cannot feel any. I used 2 T8 nuts to assemble it. The first one is on the carriage and the other one is pushed away from the first one with the bolts to reduce the backlash. The PLA piece acts as a locknut and also makes sure the the second T8 nut cannot turn due to the m3 bolt heads in the first T8 nut.

What do you need
I printed the part in PLA and with 100% infill.

For the PLA nut you need 4 m3 nuts.

2 T8 nuts.

For the first T8 nut you need 4 bolts with the right size of the head because that needs the fit in the PLA nut. The head of the bold is 5.4