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Equipment Discussions >> ATM, Optics and DIY Forum

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Pinbout
Postmaster
*****

Reged: 02/22/10

Loc: nj
Another Astro Chair
      #5782521 - 04/06/13 07:56 PM

I've wanting to build an Astor chair for the longest time. Finally, I was able to do this with very little hassle.
I had some scraps of 2x4 and a few small aluminum tubes with the star nuts in the ends. When I saw the small tubes, I knew I had to make this chair! NOW!

The next day, on my lunch break, I ran to HD picked up a hinge and some long carriage bolts with wing nuts. After dinner, without much cutting, I had the chair standing in front of me. Instead of cutting the notches in the front seat support, I glued and stapled some 1/2" baltic bosses.

For the seat, I had a leftover 10" donut hole from another uta I made. The curve of the round disc felt really nice. Its very easy to sit down and get up.

I love the way the seat removes by opening the legs and sliding it over both 2x4s.

Whoever came up with the Denver chair design? They're brilliant.




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richard7Moderator
Not Quite
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Reged: 11/02/07

Loc: Sacramento
Re: Another Astro Chair new [Re: Pinbout]
      #5782821 - 04/06/13 10:36 PM

Nice Job Danny. Sometimes the simplest ideas are the best.

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Tom McDonald
sage
*****

Reged: 12/19/06

Loc: No where man!
Re: Another Astro Chair new [Re: Pinbout]
      #5783163 - 04/07/13 06:15 AM

I like it!
One thing tho, I would attach a piece of chain or something between the legs to prevent the "splits" if the back leg suddenly decides it wants to pull a prank on you!


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Pinbout
Postmaster
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Reged: 02/22/10

Loc: nj
Re: Another Astro Chair new [Re: Tom McDonald]
      #5783262 - 04/07/13 08:12 AM

I know, didn't get there yet, but plan to.

Last night I used it anyway and the back leg kept walking forward when I was sitting low and leaning forward.

I thought see that's why I have to install that.


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RossSackett
Carpal Tunnel
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Reged: 08/17/07

Loc: Memphis, TN
Re: Another Astro Chair new [Re: Pinbout]
      #5783377 - 04/07/13 09:14 AM

I was skeptical of the astrochair concept for several years, preferring a pneumatic drafting chair. But once I actualy tried one it became my go-to utility stool. I now use it not only at the scope, but also as an adjustable shop stool that puts me at just the right height for any tool.

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roscoe
curmudgeon
*****

Reged: 02/04/09

Loc: NW Mass, inches from VT
Re: Another Astro Chair new [Re: RossSackett]
      #5783586 - 04/07/13 11:22 AM

If it feels like it wants to close up sometimes, you could make a spacer stick instead of a chain that perhaps hinges near the bottom of the front post, and hooks to the rear, so you can still slide the seat off if you want.
R


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RossSackett
Carpal Tunnel
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Reged: 08/17/07

Loc: Memphis, TN
Re: Another Astro Chair new [Re: roscoe]
      #5783638 - 04/07/13 11:52 AM

The best spacer would be two sticks, hinged in the middle and on the ends. The end hinges are knuckles-up while the middle is knuckles-down so it locks when the legs are spread. That will prevent the legs from moving in or out.

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nevy
professor emeritus
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Reged: 02/07/12

Loc: UK
Re: Another Astro Chair new [Re: RossSackett]
      #5783643 - 04/07/13 11:54 AM

Nice

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Rutilus
Carpal Tunnel


Reged: 12/17/10

Re: Another Astro Chair new [Re: nevy]
      #5783816 - 04/07/13 01:38 PM

That's a great chair, I'm going to be building one of thoses.

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Pinbout
Postmaster
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Reged: 02/22/10

Loc: nj
Re: Another Astro Chair new [Re: Rutilus]
      #5783818 - 04/07/13 01:39 PM

the best thing is it's cheap.

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Pinbout
Postmaster
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Reged: 02/22/10

Loc: nj
Re: Another Astro Chair new [Re: RossSackett]
      #5784344 - 04/07/13 05:14 PM

I wanted to keep the bar simple so I put a tnut on the back upright.

I put a hole in the front upright so I can rotate the bar to the front upright when closed.





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starman345
Wait, I'm Thinking
*****

Reged: 07/06/10

Loc: New Brunswick, Canada
Re: Another Astro Chair new [Re: Pinbout]
      #5784367 - 04/07/13 05:27 PM

Nice job Danny, I"m going to try building one of those.

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jpcannavo
scholastic sledgehammer
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Reged: 02/21/05

Loc: Ex NYCer, Now in Denver CO!
Re: Another Astro Chair new [Re: Pinbout]
      #5784716 - 04/07/13 08:25 PM

Very, very nice!

And inspiring! (if I could only get my tools out of storage, Arrgghhh!!!)
One question though. I know its entirely standard with the Denver design, but I have always wondered how it would fare with the bottom cross-piece on the back leg. This would seem to allow one to get up closer to the scope. But what about stability? On first blush it dosen't seem that all that much would be given up. Thoughts?
Joe


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Pinbout
Postmaster
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Reged: 02/22/10

Loc: nj
Re: Another Astro Chair new [Re: jpcannavo]
      #5784735 - 04/07/13 08:42 PM

the bottom leg is under most of the weight, supporting it. The bottom leg wouldn't accomplish much being on the back leg.

I had no problem getting close to the scope, just rotate the chair so the bottom leg isn't in the way.


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northernontario
Pooh-Bah
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Reged: 07/01/09

Loc: Porcupine, Ontario Canada
Re: Another Astro Chair new [Re: Pinbout]
      #5784790 - 04/07/13 09:10 PM

What a great design.

Simple.

Functional.

Cheap.

Inspiring.

Last week my kids were teasing me about the dust collecting on the work bench......I think I found my next project.

jake


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Pinbout
Postmaster
*****

Reged: 02/22/10

Loc: nj
Re: Another Astro Chair new [Re: northernontario]
      #5784816 - 04/07/13 09:20 PM

Quote:

I think I found my next project.






and its an easy project, less than half a saturday - well if you paint it, more...


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richard7Moderator
Not Quite
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Reged: 11/02/07

Loc: Sacramento
Re: Another Astro Chair new [Re: Pinbout]
      #5784861 - 04/07/13 09:50 PM

That is so nice. Now for a cushion on that seat.

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nitegeezer
scholastic sledgehammer
*****

Reged: 11/27/07

Re: Another Astro Chair new [Re: Pinbout]
      #5784867 - 04/07/13 09:53 PM

A while back I made one of these, but I put heater hose on the cross bolts that touch the upright and provides enough friction to clamp the seat in place. I can lift or lower the seat to any height I want while I am sitting on it rather than change it in stepped increments. It does come in very handy.

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Noisykids
sage
*****

Reged: 06/01/11

Loc: ma
Re: Another Astro Chair new [Re: nitegeezer]
      #5786368 - 04/08/13 04:39 PM

glad to see the spreader bar. i tried chain on mine and found it didn't work at all.

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Pinbout
Postmaster
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Reged: 02/22/10

Loc: nj
Re: Another Astro Chair new [Re: richard7]
      #5786526 - 04/08/13 05:59 PM

Quote:

Now for a cushion on that seat.




I do have a drum throne I have to re-upholster, kill two seats in one sitting?


I'm going to leave it for now, school room furniture concept, I'm not that old...yet.


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