Gold Prospecting Sluice Box (flared)

I have since made another sluice which is much better. See the following link: https://www.thingiverse.com/thing:1897847

I quickly knocked up this small (but can be made any length just by printing off more than one middle riffle section) simple drop riffle style stream sluice which is to be 3D printed in a minimum of 5 sections (2 sections make up the flare and a minimum of 3 sections make up the sluice run). The sections have been designed to be glued together with ABS slurry. so hopefully