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Just Picked Up a Cave Astrola 10" - Need Advice

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#151 HBNorm

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Posted 30 January 2014 - 07:39 PM

Heck of a nice job Norm!!! I'm gonna need to get one of those sand blaster things, the legs and knobs on my 12.5" need to be redone.


Justin, I've never had a sand blaster box before. They're awesome! There are so many projects around the house I could have used this on...let alone the cave!

Norm

#152 HBNorm

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Posted 30 January 2014 - 07:45 PM

what size compressor are you using Norm?


Greg,

I have a 21 gallon compressor from Harbor Freight. There's a story attached to it... Last year, I was walking up to the store and some really upset customer pulled the compressor out of his car and was yelling at the poor clerk from the store saying how it didn't work and that Harbor Freight sucked. He just left it and yelled a few expletives, got back in his car and took off. Thinking I could fix it and sizing up the upset customer as someone that doesn't look too skilled with his hands, I asked the lady if I could have it and she said yes. She also offered to replace it for free as that was what she was trying to offer to the jerky customer. I walked out with a brand new compressor! :grin:

#153 rcwolpert

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Posted 30 January 2014 - 07:46 PM

Nice job, Norm!!

#154 choran

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Posted 30 January 2014 - 08:27 PM

Wow! Impressive. How did you clean the eyepiece barrel and holder so well? It looked like the chrome was pitted. It came out as new!

#155 fjs

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Posted 30 January 2014 - 08:35 PM

Fresh electrical tape applied after polishing and waxing the OTA to keep with the "OEM" theme.


That finder polished up real well. Looks good!

#156 HBNorm

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Posted 30 January 2014 - 09:02 PM

Wow! Impressive. How did you clean the eyepiece barrel and holder so well? It looked like the chrome was pitted. It came out as new!


Thanks! I used a little water and 000 steal wool. I had some very fine Scotchbrite but it seemed a little too rough. I didn't want to hurt the chrome. There are some pits but they're very small so very unnoticeable...

#157 Datapanic

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Posted 31 January 2014 - 08:31 PM

When I had the new tube for the Horsetrail Cave powder-coated, I think it was around $250 - I didn't think that was too bad considering the size and the area to coat - which was equal to 4'x8'.

#158 HBNorm

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Posted 01 February 2014 - 01:43 AM

Got to work on the setting circles and the trim piece. Really bad pitting and oxidation. Didn't want to sand too deep but they still came out nice.

Here's the before:

Attached Files



#159 HBNorm

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Posted 01 February 2014 - 01:44 AM

Here's the after:

Attached Files



#160 Chuck Hards

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Posted 01 February 2014 - 10:25 AM

Outstanding!

#161 madeline

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Posted 01 February 2014 - 10:34 AM

Fantastic job Norm. Keep posting plenty of pics!!!

#162 turk123

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Posted 01 February 2014 - 12:24 PM

Here's the after:


Wow! Looks like the Brasso turned them to brass! I know, just the camera. Need to adjust the color a bit.

#163 choran

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Posted 01 February 2014 - 12:47 PM

Wow, great job again!

#164 tim53

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Posted 01 February 2014 - 01:34 PM

My 6" Model A Deluxe has those nice aluminum setting circles. I was wondering how to polish them. Never would have thought of brasso!

Tim

#165 turk123

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Posted 01 February 2014 - 02:05 PM

My 6" Model A Deluxe has those nice aluminum setting circles. I was wondering how to polish them. Never would have thought of brasso!

Tim


Mothers aluminum wheel polish works very well also. Brasso might be a little stronger as it has a chemical "smell" when you put it on.

#166 HBNorm

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Posted 01 February 2014 - 07:51 PM

My 6" Model A Deluxe has those nice aluminum setting circles. I was wondering how to polish them. Never would have thought of brasso!

Tim


Tim,

Mine were really bad. I actually started with 600 grit sand paper and worked my way up to 2000. This was followed by rubbing compound, brasso, and then polishing compound. I found that the brasso was actually more abrasive than the polishing compound. I used a wheel for the polish. As you can see, the pits are still lightly visible. Didn't want to take off too much material in the sanding process. I plan to take black gloss paint to fill the index lines and numbers.

You'll be surprised at how good you can make them look!

I never thought I'd be into the classic telescope stuff but I think I'm hooked!

#167 fjs

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Posted 01 February 2014 - 08:36 PM

I never thought I'd be into the classic telescope stuff but I think I'm hooked!


Looks like it from here. :grin:

#168 Geo31

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Posted 02 February 2014 - 12:35 AM

Consider Never Dull for similar restoration as well. Completely non-abrasive and very effective.

#169 HBNorm

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Posted 02 February 2014 - 12:43 AM

Consider Never Dull for similar restoration as well. Completely non-abrasive and very effective.


George, where do you get the stuff? I saw your earlier post and couldn't find it at True Value, Home Depot, and Auto Zone. I would like to try it!

#170 Geo31

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Posted 02 February 2014 - 01:24 AM

Any auto parts store should carry it. I'm shocked you couldn't find it at AutoZone.

http://www.nevrdull.com/

#171 Bomber Bob

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Posted 02 February 2014 - 08:43 AM

Thanks for the link!

#172 Datapanic

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Posted 03 February 2014 - 09:27 PM

I went into a local Harley shop and asked them what is the best stuff for polishing metal, especially aluminum and bought a tube of Autosol.

#173 HBNorm

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Posted 05 February 2014 - 02:48 AM

Although I've already bought a modern focuser for my Cave, I'm now contemplating keeping the stock focuser as it works great and has the long travel this scope needs without messing around with primary mirror location. That said, I need a 2" adapter. It only has the 1.25" adapter and I couldnt find the other part at the estate sale. Attached is a photo from a vintage catalog. My focuser is the 2" one on the right. Does anyone have the adapter lying around that you would be willing to well? I'd hate to start drilling and filling! Let me know.

Thanks!

Norm

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#174 Geo31

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Posted 05 February 2014 - 06:59 AM

I love the descriptions for the 1.25" focusers...

Standard simple inexpensive model.
Expensive fancy model.

Ah, those were simpler times. :)

#175 HBNorm

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Posted 05 February 2014 - 11:11 PM

You have to love Amazon.com! One of the SealMaster bearings are perfectly good despite being 38 years old. The other was an off brand and it's bad...go figure!

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