Focus / Z Lift alternative

Bearings/Motors/Belts/Gears/Etc.

Focus / Z Lift alternative

Postby pixpop » Thu Apr 08, 2010 9:07 pm

Came across this while browsing on eBay, and thought it might make a quick and dirty focus mechanism:

http://cgi.ebay.com/New-Lab-Jack-plate8 ... 500wt_1001

There are lots of these available in various sizes and quality. I was thinking it wouldn't be too hard to attach a large flat plate to the top of this thing, and then just crank the knob by hand. Obviously not suitable for a large machine, but I'm only looking at a working area of 16 x 20 inches, so this might be fine.

Neil
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Re: Focus / Z Lift alternative

Postby bdring » Fri Apr 09, 2010 12:54 am

We use those all the time at work. We call them Jiffy-Jacks. That is a good price, I think we pay well over $100 each.

They are super handy for quick test setups. They do have a lot of drag on the knob when they have any weight on them. You need to lift the weight when you turn them.
Bart
"If you didn't build it, you will never own it."
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