The purpose of this head is to allow you to rotate your camera about its nodal point / exit pupil, letting you take a series of photos in all directions, without any parallax error.

Once you take the photos, you can process them through various pieces of software to produce a single image that can cover up to a full 360° - including the ceiling and floor underneath you.

I made my head primarily out of 20x20mm T-Slot aluminum that I purchased from Misumi. Instead of designing it all in advance and having Misumi ship me the precise correct length pieces, I have a couple meters of the material that I keep at home for various projects like this.

Fabrication of the head involved cutting the T-slot material to the right length, deburring / polishing the ends, cutting a few holes, and tapping screw threads into a piece of steel for attaching it to my tripod.

I made it in the metal shop at TechShop

Step 1: Understanding the Design

Before you cut anything, you should understand the design and consider what changes, if any, you need.

I ended up making the pieces a lot longer than I needed to. I will likely go back and shorten many of them.

You should also of course determine what hardware you need. Misumi has a very, very broad range of hardware. The prices vary enormously. There are some really nifty components that can add a lot to the cost.

For the nuts, I used spring-loaded post insertion nuts. This means that they don't slide around, and you can insert them in the middle of a rod - they are quite narrow. The standard nuts must be inserted at the end of a rod, so if you have something already assembled you may need to take it apart to insert a nut.

If you don't already know the distances needed for your camera's exit pupil alignment, you may want to make a longer version first and then chop off excess material.
cool, do you have any panoramic pics to share? is it fairly easy to adjust the mount so that you can take horizontal panoramic shots?
I take spherical panoramas, which means I don't actually need to get the horizontal alignment right when I'm taking them. I can adjust it as much as I want in Hugin, the stitching package I use. I'll try to post something.

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