I had thought I solved my warp issues (airtight enclosure with thermal insulation, ambiently heated to roughly 50c via bed during print) until I started my first long print with ABS, it failed around 15hours in and i pinpointed the problem to be the tiny wind coming from extruder cooling fan. This shroud pushes that air upwards and fixes the problem.
Secure with hot glue or adhesive of choice (abs glue, ca glue, epoxy, whatever)
feel free to drill and add rivets/screw/bolts instead, up to you.
Install on whichever side your fan blows TO ->> or on both sides for extra safety, axis should retain all of the printing area even with both sides done.
Part is to suit Anet A8 gen2 (mobo text: "v1.5" Should work on all A8's though and maybe prusa i3/tronxy etc.
print in almost any orientation
Print doesn't take long and uses a mini amount of filament
any - i used ebay "3dfillies" chinese abs any - i used ebay ABS
any (most likely zero due to total thickness anyway)
any - i did black
with or without supports up to you, i used none
rafts/brim perrsonal preference I used none
minimum 2 perimeter/walls
I used fusion360 and started with primitives, extruding and customising the shape until i was happy with the fit, first model was 3mm too narrow, second final version fit great.