OB1.4 with 380x380x380 print envelope

this is wired1's excellent build of the ob1.4 with a larger build envelope of about 380x380x380mm.

I wanted to use half of the 1m openbeam length for the base.

I used the ob1.4 original diameter rods and placement, I just made them longer.

I replaced the front y axis gt2 pully with a larger one from sdp-si.com : 6Z51M036DF0605 , so it would clear the openbeam rail.
this pulley has 36 teeth.
I also had to buy more gt2 belt due to the larger build envelope, this is sdp-si.com part number: 6R51MC060 , I had to use 3meters total for x and y axis.

using a lazy susan bearing for the filiment feed.
tried a bed made from granite tile 12" x 12", but it cracked at 70deg C.
so I'm now using 0.25" x 15" x 15" t6061 aluminum plate over 0.375" x 15" x 15" plywood connected directly to the standard ob1.4's y-carriage.

printing on blue painters tape and if needed hairspray.
the tape is applied directly to the aluminum plate.
using hossman's dial indicator attachment the alum