timo4352
super member
Reged: 04/16/07
Posts: 160
Loc: Northeast Ohio
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Well,not quite yet.
But I did get a start on my CHief project after spending a few weeks drawing up plans and agonizing over the details.
The lower end shown here is made from 5/8 baltic birch. 45 degree box joints - 240 of them - 
It was a fun trick getting it all glued up and clamped before the glue started to dry. 
The Fedex man dropped off my mirror yesterday While I was cutting the wood. Surplus Shed is gonna supply a 1/20th wave secondary. I've yet to order my lenses though.
The plywood was free! - a cabinet at work was being thrown out and I recycled it. I've got 10 coats of shellac on the box now. More to come in the days ahead - once I start a project things move along pretty quickly. Still a few details to be worked out on the fly.
Tim
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Orion 3.6CA Reflector
and 2 homebrew scopes --
8" Hubble Bubble ballscope
8" F/8 CHief - nearing completion 
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neo
professor emeritus
Reged: 02/12/08
Posts: 616
Loc: Iasi, Romania
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That is beautifull! How did you do those joints so perfect?
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Russian 15x50 binos
Home made 8" f/5 Newton on eq mount
Home made 70mm f/6 (Rodenstock Rotelar lens) Apo refractor
www.astronomy.ro
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kfrederick
professor emeritus
Reged: 02/01/08
Posts: 665
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great very nice /you will love the views/kevin frederick
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senske
sage
Reged: 01/10/09
Posts: 360
Loc: Spokane, WA
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Whoa! That's a fine looking box. Your telescope is going to be beautiful with craftsmanship like that. Nice job.
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Andrew
Orion SkyQuest XT10 Intelliscope with Orion 9x50 and Telrad Finders
Orion WorldView 10x50 Binoculars
Celestron NexStar 8 SE with GSO 8x50 and Red Dot Finders
Galileoscope
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perfessor
sage
Reged: 12/30/07
Posts: 499
Loc: Northern Illinois
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Can you share some of the optical specs? As in, primary size and focal length, details of the corrective lenses, etc.
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Tom
"Don't always know what I'm talkin about"
8" f/7
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rboe
Reged: 03/16/02
Posts: 45363
Loc: Phx, AZ
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The trick I hear for finger joints like that is to use white glue vs. the yellow stuff (which has this nice official name I can't spell  ).
Dang nice job so far. 
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Ron
NS11GPS
Pronto
16" dob
15X70 Obies
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Wes James
Post Laureate
Reged: 04/12/06
Posts: 3454
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Quote:
the yellow stuff (which has this nice official name I can't spell
... Aliphatic Resin... !
Beautiful finger joint work... the 45 degree angles throws a whole 'nother spin on them. Nice job!
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Gary Fuchs
scholastic sledgehammer
Reged: 05/22/06
Posts: 867
Loc: Easton, PA, USA
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Yes, very nice woodworking.
Gary
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timo4352
super member
Reged: 04/16/07
Posts: 160
Loc: Northeast Ohio
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Quote:
That is beautifull! How did you do those joints so perfect?
I made a rather simple 45 degree jig for the table saw and use a dado cutter. I can post a pic if anyones interested...
Quote:
Can you share some of the optical specs? As in, primary size and focal length, details of the corrective lenses, etc.
It's an 8" F/8 parabolic mirror - (from Iowa Scientific, by the way, if anybody has any info on thier mirrors I'd love to hear it) I'll be using a round 50mm 1/20th wave secondary from Surplus Shed and one each +/-500mm 50mm dia lenses. The perscription is posted on the Spiderless Yahoo group under files 8" F/8
Thanks All
Tim
--------------------
Orion 3.6CA Reflector
and 2 homebrew scopes --
8" Hubble Bubble ballscope
8" F/8 CHief - nearing completion
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timo4352
super member
Reged: 04/16/07
Posts: 160
Loc: Northeast Ohio
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Quote:
The trick I hear for finger joints like that is to use white glue vs. the yellow stuff (which has this nice official name I can't spell ).
You mean E-l-m-e-r-s ??? 
Wish I would've know that sooner. Live and learn. Maybe next time...
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Orion 3.6CA Reflector
and 2 homebrew scopes --
8" Hubble Bubble ballscope
8" F/8 CHief - nearing completion
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tim53
Pooh-Bah
Reged: 12/17/04
Posts: 1447
Loc: Highland Park, CA
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I too love the box joinery!
I can't wait to see how the scope performs. Do you image with your scopes?
-tim
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"We`re just waiting looking skyward as the days come down.
Someone promised there`d be answers, if we stayed around."
-Orchestral Maneuvers in the Dark, "The Romance of the Telescope"
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timo4352
super member
Reged: 04/16/07
Posts: 160
Loc: Northeast Ohio
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Quote:
Do you image with your scopes?
-tim
I don't, but someday that may change. I've already got a Dob Driver for this scope on my mind - so maybe...cheaply - point and shoot stuff 
Tim
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Orion 3.6CA Reflector
and 2 homebrew scopes --
8" Hubble Bubble ballscope
8" F/8 CHief - nearing completion
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Wes James
Post Laureate
Reged: 04/12/06
Posts: 3454
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Quote:
You mean E-l-m-e-r-s ???
Actually, Titebond... Elmers was kind of a latecomer in the "yellow-stuff" game!
Your jig obviously was carefully set up and tweaked! The longer the length of the piece being cut for box joints, the more difficult it is to keep the spacing from developing a cumulative error. I know- I've wasted a lot of wood trying to set up box joint jigs for longer runs!
Wes
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RossSackett
professor emeritus
Reged: 08/17/07
Posts: 691
Loc: Memphis, TN
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I now use Titebond III for complex glueups because of its long open time.
Ross
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"A craftsman relies on science when the state of knowledge allows it, tradition and experience when it does not, and makes art whenever he can."
12 scopes from 4.25 to 18" and a 24" in progress. 12 ATM awards. Webpage: http://stardazed.com/ Some more scope pix at http://www.flickr.com/photos/8315630@N04/
Anagrams: Amateur astronomer = A mature moon-starer; Dobsonian maker = Debonair as monk
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Ed Jones
Pooh-Bah
Reged: 04/06/04
Posts: 1415
Loc: Sin-sin-atti
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Nice joinery Tim! I'm glad to see other folks making these. How tall is your box?
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Ed Jones
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davidpitre
Carpal Tunnel
Reged: 05/10/05
Posts: 1824
Loc: Central Texas
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Quote:
I made a rather simple 45 degree jig for the table saw and use a dado cutter. I can post a pic if anyones interested...
Please do.
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David
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orion63
super member
Reged: 12/10/07
Posts: 140
Loc: Lima, Peru
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Very nice workmanship! pretty impressive!
Ron's right, white glue is the way to go for this kind of joints.
Congrats!
Gonzalo
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rboe
Reged: 03/16/02
Posts: 45363
Loc: Phx, AZ
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They all make white and yellow glue, although Elmers is associated with the white glue - most folks would assume you ment white.
Wes: Shoot, now I can't even pronounce it! Thanks for piping in with the correct name.
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Ron
NS11GPS
Pronto
16" dob
15X70 Obies
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timo4352
super member
Reged: 04/16/07
Posts: 160
Loc: Northeast Ohio
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Quote:
Nice joinery Tim! I'm glad to see other folks making these. How tall is your box?
Ed
It's only 15 inches... I'm kinda flying by the seat of my pants here... I'm hoping the extra weight of the 5/8 ply will allow the shorter box... time will tell...
Quote:
They all make white and yellow glue, although Elmers is associated with the white glue - most folks would assume you ment white.
Sorry Ron
I really meant the whole Elmers thing as a joke - I have a strange sense of humor sometimes... 
But the tip on the white glue did sink into my sometimes thick skull - Thanks
Tim
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Orion 3.6CA Reflector
and 2 homebrew scopes --
8" Hubble Bubble ballscope
8" F/8 CHief - nearing completion
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rboe
Reged: 03/16/02
Posts: 45363
Loc: Phx, AZ
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Ah! Hard to catch dry humor on the net. Don't ask how I know. 
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Ron
NS11GPS
Pronto
16" dob
15X70 Obies
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