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#201 dawsonian2000

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Posted 03 September 2012 - 04:51 PM

Very nice Mel,

I wanted to FYI that you can get a 6 foot 1/4"-20 threaded aluminum rod from McMaster-Carr for $8.91. Or 5/16"-18 aluminum rod for $14.07.
Matching aluminum nuts and washers are also available from the same source.
McMaster-Carr never exploits the customer on shipping costs and usally ships same day. They are located in Atlanta, GA.
I have bought a lot of stuff from them over the years for both ATM and other machining projects; never been unhappy with the shipping costs or service, web site is very user friendly, much easier to navigate than Grainger.

marty


Hi martym,

Thanks for suggesting McMaster-Carr as an means of purchasing the aluminum threaded rod. I, too, have done business with them for quite some time. I even have a link to their website from my own. I could have went with the aluminum rods, but I decided to go with the zinc-plated ones instead. In any case, I will be priming and painting them with flat black, which should suffice in this application; let alone the cost savings. :grin:

Thanks again,

Mel

#202 dawsonian2000

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Posted 11 September 2012 - 01:18 PM

Slowly, efforts are continuing to move forward with the Jaegers GJD 6" f/10 refractor build in the priming of the baffle rack. A simple process to say the least.

Mel

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#203 dawsonian2000

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Posted 11 September 2012 - 01:22 PM

Next, I applied Krylon ultra-flat black enamel spray paint. I like the fact that the Krylon paint has what they call "Fusion Technology" which leans to better adhesion to plastic substrates. This is great thing since my baffles are made from Lexan (polycarbonate). :grin:

Mel

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#204 dawsonian2000

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Posted 15 October 2012 - 11:13 PM

It has been another long stretch of time since I have posted updates on the construction of my 6". Nevertheless, I have made some progress. Of late, I have finished flocking the interior of the 8" dew shield using a unique method. Basically, I used Rustoleum Truck Bed aerosol coating as my base coat, because it delivered a textured substrate. This textured base coat provided a great polymer surface for the application of Krylon (Camouflage) ultra-flat black spray enamel. What's cool is that it has what Krylon calls "Fusion Technology"; meaning it bonds to plastic more readily. Unfortunately, I did not have enough of the Krylon Camouflage paint to apply a second coat, so when I went to purchase another can of the paint, there was none available. But, I found an alternative I thought I would try. It turns out that Rustoleum also has a camouflage brand of flat black paint. It turned out quite well. Interestingly, I found it to be even darker that the Krylon, which has quite the reputation! Ummm! :question: I will post a photo later.

#205 dawsonian2000

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Posted 16 October 2012 - 12:33 PM

Here are some photos of the dew shield with its flocking completed. In my experience, the Rustoleum Camouflage flat black spray enamel topped the Krylon Camo in sheer light absorption capability! Next step will be the painting of it. But, before I do that, I must sand and prep the main tube for painting as well.


Mel

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#206 martym

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Posted 17 October 2012 - 07:46 AM

That's a very interesting and usefull bit of ATM info; thanks, Mel

marty

#207 dawsonian2000

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Posted 21 October 2012 - 04:14 PM

Thanks Marty! Good to see someone's keeping watch. :D

Mel

#208 dawsonian2000

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Posted 21 October 2012 - 04:34 PM

With fantastically pleasant weather being witnessed here in Riverview, FL, I took advantage and finished sanding the main tube for the 6" f/10 in preparation for priming and painting. As with the dew shield, I went through three successively finer grits (80, 220, and 600) of sanding material to get the tube smooth enough. The end result turned out beautifully! Here's a photo.

Mel

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#209 martym

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Posted 22 October 2012 - 07:49 PM

Great Mel, now reward yourself for the effort by going to McDonalds and getting CBO 1/3 pound burger!!!

marty

#210 dawsonian2000

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Posted 22 October 2012 - 10:17 PM

Nope! I think I will go for the gusto and get the infamous McDonalds' "Happy Meal"! :lol: :roflmao:

Mel

#211 dawsonian2000

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Posted 28 January 2013 - 11:29 PM

Sorry for the delay. I am happy to report that work has resumed on the Jaegers GJD 6" f/10 refractor build with the priming of the main tube (see photo below)! The holes with threads have been protected from paint with circular wedges of painters tape.

On tomorrow, I will be priming the Dew Shield. It is my wish to begin painting the primed tubes over the weekend. Let's see if my plans hold up. :smirk: :crazy:

Mel

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#212 martym

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Posted 13 February 2013 - 07:54 AM

Looks like you will be finishing up soon. Congrats. Maybe you may want to bring the GJD up to the Chiefland,Fl observing field to show it off. Our site: http://tech.groups.y...flandobservers/
mention my name to the moderator if you want to visit as a guest.

marty

#213 dawsonian2000

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Posted 15 February 2013 - 10:55 AM

Hey Marty,

If other matters stop getting in the way, I would have had this scope finished a long time ago. But, I am a very patient man.

BTW - I attended the Chiefland Winter Star Party back in 2010. On that visit, I brought out my 10" fork mounted Newtonian and Carton 4" f/13 refractor. I hope to get back out to their site to showcase the GJD 6" f/10 Jaeger refractor as well. I just have to find some time to get her done!!!! :confused:

Mel

#214 dawsonian2000

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Posted 25 February 2013 - 11:12 AM

Finally!!! One more baby step... Here is the painted dew shield. I hope to start painting the main tube before weeks end.

Mel

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#215 dawsonian2000

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Posted 25 February 2013 - 11:19 AM

Hey Marty,

It just so happens that I was at the Winter Star Party at Chiefland in November of 2010. On that occasion, I brought out my 10" fork mounted "Gary Barabino" Newtonian and the "Mary Dawson" 100/1300 Carton refractor. I had a fantastic time. I look forward to getting the "GJD" refractor up there soon under those awesome skies Chiefland has; if only I can get this project done. :foreheadslap:

Mel

#216 martym

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Posted 27 February 2013 - 02:34 PM

That's good you're making progress. Actually the best time of the year in Chiefland in my opinion is comming up in March, April, and May. We usually have some dry air overhead and the temperature isn't so cold as in winter; plus you get the leftovers of Orion and company in the early night, then galaxy season comming up in the east later when the air is best and the nearby light domes get lower after midnight.

marty

#217 dawsonian2000

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Posted 07 March 2013 - 01:29 PM

I might just have the 6" ready at that time! I would love to bring it up there during that time of the year.

I made more progress this afternoon in painting the main tube for the GJD 6" f/10 Jaegers refractor! Below is a photo.

!!! C O R R E C T I O N !!! - In my last post, I said I was at the Chiefland "Winter Star Party". It was actually the "Fall Star Party" of 2010. Sorry for the error. :foreheadslap:

Mel

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#218 dawsonian2000

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Posted 07 March 2013 - 10:09 PM

After several hours after painting the main tube, I checked the curing and found that it is going to take a great deal of time due to the cool weather. Nearly three hours had gone by and the paint was still quite tacky.

Additionally, I painted the dew shield nearly two weeks ago and it is still out-gassing! Since I typically wait for my painted components to out-gas completely before assembly, I hope the temperature will rise to at least the 70's soon so the components can cure faster.

Mel

#219 bremms

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Posted 08 March 2013 - 11:58 AM

Once they are not tacky. I use the sun to harden the paint. Smaller pieces go in the oven at about 150-170 deg. it will outgas and harden the paint very quickly.

#220 Chuck Hards

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Posted 08 March 2013 - 12:10 PM

I started using catalyzed automotive paint about 25 years ago. With accellerators you can get it dry to the touch in as little as ten minutes, and it's a durable surface. Sure beats watching paint dry... ;)

Nice color!

#221 BarabinoSr

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Posted 08 March 2013 - 09:53 PM

Mel, I'm glad to see that you're back in the game!! I can't wait to get back to Riverview for some good observing this year. I'm hoping that your 6" f/10 is as good optically as advertised. Good Luck
. Looking forward to more posts on your work my brother. That 6" f/10 Jaegers will be an AWESOME instrument. Clear Skies, GB/VSC-1

#222 dawsonian2000

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Posted 09 March 2013 - 07:56 PM

Great recommendation, bremms! :thanx: I have done the same with other components I have painted during the fall and winter seasons. Since the tube is now much easier to to handle, I will consider letting the tubes do a little sun bathing to get it outgassed much sooner. Getting that rock hard finish is a must.


Mel

#223 dawsonian2000

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Posted 09 March 2013 - 07:58 PM

Hey that may be an option for my next project, Chuck! Waiting for paint to dry can make the best us loose valuable patience.

Mel

#224 dawsonian2000

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Posted 09 March 2013 - 08:32 PM

Mel, I'm glad to see that you're back in the game!! I can't wait to get back to Riverview for some good observing this year. I'm hoping that your 6" f/10 is as good optically as advertised. Good Luck
. Looking forward to more posts on your work my brother. That 6" f/10 Jaegers will be an AWESOME instrument. Clear Skies, GB/VSC-1


Thanks Bam! Getting to this point was difficult with all of the other matters I have been dealing with. But, I am getting it all done, and I consider it a blessing.

Mel

#225 dawsonian2000

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Posted 15 March 2013 - 09:19 PM

UPDATE: I checked the tubes today and their outgassing is nearly complete. I will give them another week or two. Then, I hope to get assembly on the road.

Mel






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