MX-5 Ducktail Spoiler

This is a ducktail spoiler I designed in Blender for an ND MX-5. It took a few revisions and it's still a little fatter than I'd like but overall I'm happy with the design.

You need to cut the model to get it to fit on a build plate - I've attached a .3mf showing what I've done. I split the spoiler in half and then each of those halves in half again, with at least 2 dowels per cut to help align it (I did 3). It'll be able to fit on a standard Bambulab 256^3 build plate. There is a little bit of warping that occurs with the very sharp edges and you just need a stronger brim / fix it in post.

Print Settings:

• 0.2mm layer height

• 4+ walls

• 5-10% infill (depending on weight, the walls make more of a difference)

• at least ABS, I used ASA. PETG might not survive

Post-print:

I used an acetone slurry to weld the parts together. I also tried brushing some of the slurry on to help with the layer lines but I'm not 100% confident it helped. The first couple of passes were with 80 grit + 120 grit sandpaper. I used epoxy body filler for the bigger imperfections and then sanded it down. Sand filler sand filler welcome to your life (it's not too bad). When you think you've got most / all the imperfections out, use a plastic adhesion promoter and then epoxy filler primer. Sand, filler primer, sand, filler primer. I then used 1 pack gloss black in a can because my air compressor is asthmatic and I was in a rush.

Big Wang Co - Unit 00