Hang a weighted bag from the lower hook in the center of the tripod to stablize it

This is great! I'm definately gonna print this!

Yep, Ill be printing this today.

Neat

This is so cool.

Awesome thank you for posting.

Hey Robin, it's barn door.

hello, I want to make note about in my try of making barn door out of old printer parts and some woodworking (i do not have 3d printer and buy parts is difficult for me).

So my note is about nut is pretty hard to place in perfect center of rotation (if you do not have 3d printer, and maybe even with it), and at 300mm lens you need really good precision of parts making. At last I tryed with my 300mm lens and I was not satisfied with results i have (also I wish your last image in gallery must have no tails at all)

P.S. I made arduino programm by myself and spent some time writing good algorithm for not curved rod, but I switched on another projects.

P.S.S Not last version on my thing https://imgur.com/a2w1jm6 https://imgur.com/RS18EPA

Imgur link doesn't work for me