Got 10 X 3m 32.5 mm PVC piping
will need a bunch of these:
center t: https://www.thingiverse.com/thing:3271798
cross: https://www.thingiverse.com/thing:3271772
corner t: https://www.thingiverse.com/thing:3271765
cross: https://www.thingiverse.com/thing:3271761
Need to print one of them to see what the tolerance is like