>>9384810>>9385713If you make the tube part so that the dumbell can slightly slide up and down it actually gets more.
Also if you aren't comfortable building with pla plate and worry the tube will pop apart, the 3mm female connector from the joint runner of the bullet knights can be drilled out and cut to the appropriate length for a bit more strength.
>>9387752>>9387661>>9387839Pic related might do you a bit better.
