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Equipment Discussions >> Classic Telescopes

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turk123
Carpal Tunnel
*****

Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: turk123]
      #5883596 - 05/25/13 08:41 AM Attachment (21 downloads)

Started on one of the legs this morning. These are a bit tedious with all the struts, but after about an hour, the first leg was paint free.

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turk123
Carpal Tunnel
*****

Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: turk123]
      #5883597 - 05/25/13 08:42 AM Attachment (20 downloads)

One down, two to go.

Edited by turk123 (05/25/13 08:43 AM)


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starman876
Postmaster
*****

Reged: 04/28/08

Loc: VA
Re: Elli Buk Cave 10" Cassegrain [Re: turk123]
      #5883641 - 05/25/13 09:29 AM

I need to get some of that aircraft remover stuff. Where did you get it. That stuff is fantastic.

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dgreyson
scholastic sledgehammer
*****

Reged: 11/06/12

Loc: South Carolina
Re: Elli Buk Cave 10" Cassegrain [Re: starman876]
      #5883784 - 05/25/13 11:01 AM

I lile it better than sandblasting but it burns my hands thru butyl gloves for some reason. havent found anything it wont budge yet.

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turk123
Carpal Tunnel
*****

Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: dgreyson]
      #5883812 - 05/25/13 11:25 AM

Autozone carries it.

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turk123
Carpal Tunnel
*****

Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: turk123]
      #5887698 - 05/27/13 07:16 PM Attachment (14 downloads)

Did a little work this memorial day. I finished up the other two legs.

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turk123
Carpal Tunnel
*****

Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: turk123]
      #5887712 - 05/27/13 07:21 PM Attachment (17 downloads)

This is also kind of a milestone. I now have finished removing paint from all the major parts (focuser x2 is still left.) I love my favorite "aircraft remover" but it is time I set it aside.

Anyway, my dog Maddie is driving me crazy to play with her new toy and I guess I better go play. Here's Maddie my buddy. She is a Golden doodle.

(Pardon me moderator )


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tim53
Postmaster
*****

Reged: 12/17/04

Loc: Highland Park, CA
Re: Elli Buk Cave 10" Cassegrain [Re: turk123]
      #5887713 - 05/27/13 07:21 PM

Looking better every day!!

Tim


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terraclarke
Post Laureate
*****

Reged: 05/29/12

Loc: Just South of the Mason-Dixon ...
Re: Elli Buk Cave 10" Cassegrain [Re: tim53]
      #5887819 - 05/27/13 08:10 PM

Great work Tom. Love the astronomy mascot, I have one of those too, two actually.

Terra


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Da Bear
scholastic sledgehammer
*****

Reged: 11/21/06

Loc: Kali-Forn-Ya
Re: Elli Buk Cave 10" Cassegrain [Re: terraclarke]
      #5887826 - 05/27/13 08:13 PM

Tom,

I sandblasted my Cave legs, then had them powdercoated. It worked out well, as the powdercoat was very hard and chip resistant --but not chip proof.

What a great thread, keep posting.

Da Bear


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turk123
Carpal Tunnel
*****

Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: Da Bear]
      #5887892 - 05/27/13 08:49 PM

Quote:

Tom,

I sandblasted my Cave legs, then had them powdercoated. It worked out well, as the powdercoat was very hard and chip resistant --but not chip proof.

What a great thread, keep posting.

Da Bear




We have a powder coating shop here and I really thought about doing some parts with them. The only problem I found is that they have limited colors. My friend who restore airplanes uses an acid etching on aluminum and then a two part epoxy primer. The work he does is well beyond anything I've ever seen. He rebuilt a fairchild 40's plane that became the "model" of all restorations. I did the photography for it when he finished.

Here is a link to the pictures:

http://www.cave-astrola.com/www.elmhurstprop.com/fairchild/index.html


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Greg Eckes
member


Reged: 03/23/10

Re: Elli Buk Cave 10" Cassegrain [Re: dgreyson]
      #5888256 - 05/28/13 01:28 AM

Thanks Tom. The pictures help. After studying your Cass. pictures I realized that they were not the rotating type.

Greg


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Greg Eckes
member


Reged: 03/23/10

Re: Elli Buk Cave 10" Cassegrain [Re: dgreyson]
      #5888257 - 05/28/13 01:30 AM

Thanks Gregg for the tip. I'll let you all know how it goes this week.

Greg


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turk123
Carpal Tunnel
*****

Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: Da Bear]
      #5888765 - 05/28/13 11:42 AM

Da Bear

I did some research and found another powder coater nearby. He has lots and lots of colors and quite a bit of special equipment to do all sorts of things. The salesman was out today, but the secretary I talked to said aluminum is fine unless it cannot go through the heat process. If I decide to powder coat the mount RA and DEC assemblies, will I have to remove the bearings? And if so, how do I do that?

How hot are the ovens for this process? Can you tape off areas that you don't want coverage? Anyone with this experience?

Edited by turk123 (05/28/13 11:44 AM)


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tim53
Postmaster
*****

Reged: 12/17/04

Loc: Highland Park, CA
Re: Elli Buk Cave 10" Cassegrain [Re: turk123]
      #5888782 - 05/28/13 11:49 AM

I would be more inclined to use a good etching primer and good old paint. And you definitely want to be able to mask off areas where bearings live.

-Tim.


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turk123
Carpal Tunnel
*****

Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: tim53]
      #5888825 - 05/28/13 12:06 PM

Quote:

I would be more inclined to use a good etching primer and good old paint. And you definitely want to be able to mask off areas where bearings live.

-Tim.




After doing even more research, I am finding that you may be right. Powder coating is susceptible to chipping and would be difficult to repair. It also is quite expensive compared to paint and of course involves the heat thing.

Paint can also be removed easily if a color is not quite right.


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turk123
Carpal Tunnel
*****

Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: turk123]
      #5889814 - 05/28/13 09:44 PM

I started the Capt. Nemo focuser and noticed the paint had a rubbery feel to it. What kind of paint is it? I know one thing, aircraft remover has met it's match. It barely budges this stuff. I'm wondering if it has a rubber base and is defeating the paint remover. Anyone have one of these to compare?

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turk123
Carpal Tunnel
*****

Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: turk123]
      #5889835 - 05/28/13 09:54 PM Attachment (13 downloads)

Here are a series of pictures on the focuser. I am using an Xacto knife to cut paint out of the tough areas.

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turk123
Carpal Tunnel
*****

Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: turk123]
      #5889840 - 05/28/13 09:55 PM Attachment (11 downloads)

no 2

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turk123
Carpal Tunnel
*****

Reged: 07/09/10

Loc: N.E. Ohio
Re: Elli Buk Cave 10" Cassegrain [Re: turk123]
      #5889843 - 05/28/13 09:56 PM Attachment (13 downloads)

no. 3

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