2inch PVC Torpedo/ Projectile

2inch PVC Torpedo used in underground utilities, the torpedo is blown through an electrical conduit with string attaced at the back by a compressor. used to string electrical pipes for pulling wire. chamfered the back in case it gets stuck on debris and needs to be pulled back. Tested on 45 and 90 degree PVC sweeps/ bends. Was having a hard time getting the normal darts from suppliers recently. I used PETG and a 25% infil with gyroid for the 2 inch to make it strong and add a little weight but not too heavy. my 1 inch one Went 1000ft in 6 seconds for me outdoor with a diesel compressor.