Fillament Welding Clamp

Fillament welding clamp.
I designed this to make welding fillament easier.
The goal is to make a tool to hold two fillament tight and accurate, so people can hot-plate weld 2 fillament easily.
I have tried it on PLA and TPU, they both work.
I uploaded the assembly for reference.

Using of this tool:
https://youtu.be/ElFuTF0LtSs
(I can’t get access to youtube, asked a friend uploaded for me, if there’s problem please leave comment)

How to use:
1 Assemble the clamp. Add some grease on the 2 bolt threads to make the nuts can clamp tight.
2 Cut fillament end with a sharp knife or Precision Shear Cutter to make the end surface flat, put 2 Fillament into the 2 holes of "08_Fillament locator". If it's too tight, use a 1.8mm drill to enlarge the holes.
3 Put the Fillament locator into the clamp, and tighten the nuts as much as you can.
4 Squeeze open the clamp to remove the Fillament locator. Adjust both ends to align together if they are not aligned so well.
5 If you have a so