Leveling magnetic bases with epoxy

If you’re using machine shop magnetic bases on your holography table you’ve no doubt discovered that they wobble a bit.

This is a definite no-no when it comes to holography as that creates a weak point where vibration can continue to exist in your table.

The best way I’ve found to level the bases isn’t to sand them level but rather to use epoxy to let gravity quickly level them for you.

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Extending valve stems

If you’re putting together a holography table on a budget, chances are good you’ll be using inner tubes as the primary isolation medium.

Chances are also good that you’ll need to adjust the pressure in the tubes once everything is piled on top of them.

Here’s one method for extending the valves so you can adjust the pressure anytime you need to.

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Day of the Dead

A few weeks ago I started work on a hologram inpired by Pirates of the Caribbean and began carving a medallion that I wanted to look like the medallion featured in the movie. Unfortunately my sculpting skills aren’t yet up to that task but I was able to produce a medallion that is more appropriate for a Day of the Dead celebration and set about making a hologram of that.

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Jim Baen passes away

Jim Baen has passed away.

David Drake has written an excellent obit and interestingly enough was asked to write it by Jim just a day before Jim had his stroke.

If you want to make a memorial donation, Toni Weisskopf and Dave suggest that people purchase copies of The World Turned Upside Down and donate them to libraries or teenagers of their acquaintance.

Photographing reflection Holograms

Getting a good photograph of a hologram isn’t always an easy proposition but if you use the right tools and are patient you can get excellent results just about every time.

This tutorial assumes you have full control of the hologram and can take it off the wall at will. If you’re trying to take a picture of a hologram that’s permanently mounted to a wall or one where the owner won’t allow you to move it, you’ll need to adjust accordingly.

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Batterygit

Every once in a while I do a google search to see who’s linking to pages on dragonseye.com.

On Thursday I did this and found that there had been a few more comments posted to JKOnTheRun regarding the Batterygeek pack, one of which I purchased last year and have since wrote a few reviews of.

The latest comments and my responses follow.

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