Welax B3 Chair: Assembly, Adjustable Arms and One Order-of-Operations Lesson

I should have followed the assembly order more closely on this Welax B3 chair. The control hardware gets in my way while I attach the arms, which gives me a useful lesson to pass on before the chair is even finished.

A wide base and a thick seat

I unpack the one-piece metal base, wheels, mesh back and seat cushion. The base feels substantial, and the wheels roll smoothly while I fit them.

I also look at the adjustable lumbar section on the back. Those are the parts in front of me, without a load test of the advertised capacity or a long-term comfort result.

The order of assembly matters

I attach the control section and then find that it obstructs access while I work on the arms. I point out the mistake and recommend following the supplied order instead of copying that part of my attempt.

After fitting the arms and back, I lower the assembled seat onto the base. I drop the tool a few times along the way, but get the hardware together and reach the adjustment stage.

Try the controls once it is together

I demonstrate the chair height, the lumbar support moving up and down and several armrest adjustments. That gives a first look at how I can position it.

The video calls it B3, while the linked description uses Pro 5127 as well. I have not independently verified the certification claims or tested the 500-pound rating in the title.

The original Welax discount link is below. It contains MIKE in its discount path, with no amount or expiry supplied. Geeksoutfit also provided apparel for the recording.