100mm Barrel with Textured Staves

I would have printed the whole barrel, but CURA 2.5 added a 5mm thick layer across the whole barrel at 70% ... not sure why, but I'll try again with Cura 2.6.2 next.  

The best way to 3D print a barrel is: 96mm Wide x 100mm Tall Barrel https://pinshape.com/items/383... or a little smaller is: 100mm Tall x 75mm Wide Barrel https://pinshape.com/items/383...

Yes, even this design can be a FREE download once I am fully funded for my RoboGuts™ S.T.E.A.M. Education Program Kits;

IF each viewer donates just $5 I'll be funded almost overnight and then all my designs become FREE downloads!  

The fastest and cheapest way to get all my .STL files FREE is to donate $5 to help fund school materials ... once I have $3,500 I'll convert all these files to FREE downloads.   https://www.gofundme.com/roboguts-kits-lessons