I've been looking at this group for awhile now and what I see is a lot of mirrors with similar problems and annoyances, with pictures to substantiate their...
14425
Mel Bartels
Mel_Bartels
Sep 2, 2009 12:55 am
Hmm, my experience with students in my mirror making classes over the years is that small slow mirrors (6" f/8) are harder than big fast mirrors (10" f/5 to...
14426
zway2bisfancyfree
zway2bisfanc...
Sep 2, 2009 2:06 am
... Hi Mel, I agree your advice below is good and I for one have been able to make a handful of good mirrors solo with only remote hand holding. It was my...
14427
Mel Bartels
Mel_Bartels
Sep 2, 2009 2:31 am
Most guys' hands are too big for 6 inch and smaller blanks. Consequently they over stroke and over power the figuring. Additionally, slow mirrors are touchy...
14428
Mark Whitaker
tnut55
Sep 2, 2009 12:02 pm
I agree with the statement about the 6" being difficult due to the size of the blank. I would suggest that an 8" mirror is a better choice for a first mirror...
14429
rnabholz
Sep 2, 2009 1:58 pm
I had occasion to make a couple of dew shields for my Telrads recently, and thought I would make a template and simple instructions available to anyone...
14430
Dave Smith
smithersscope
Sep 2, 2009 7:20 pm
Too cool! Really like your website. Thanks Rod! ... From: rnabholz <rnabholz@...> Subject: [atm_free] Telrad Dew Shield - Easy and Inexpensive To:...
14431
ruachsheavens05
Sep 4, 2009 2:35 pm
I need some help and advice - please. I sent a 16" mirror off to Tony Gondola of Big Eye Optics in Las Cruces, NM, to be refigured and recoated. It was the the...
14432
ruachsheavens05
Sep 4, 2009 9:44 pm
He has called me and everything is fine. I have his new phone number now and we are looking into why all my emails to him have been bouncing....
14433
rnabholz
Sep 7, 2009 6:08 pm
Thanks Dave, I appeciate your taking the time to comment. Clear Skies, Rod...
14434
tsulmer1
Sep 7, 2009 7:03 pm
Hi, My emails to Tony have also been bouncing back for the past 2.5 weeks. Can someone provide me with his phone number, or Tony, please contact me regarding...
14435
opticsed
Sep 9, 2009 6:38 pm
Kevin Frederick sent me a picture of 2 of his 20 inch telescopes side by side. One an f/5.25 Newt and the other an unobstructed f/8 Chief. Which would you...
14436
Richard F.L.R. Snashall
rflrs2000
Sep 9, 2009 7:03 pm
... Might the picture of the Newt become a collectible antique?...
14437
opticsed
Sep 9, 2009 8:14 pm
... Don't know, time will tell. Ed...
14438
trulyyours05
Sep 13, 2009 1:00 am
If the 20" is very good that's the one I'd pick. Al...
14439
suppjos
Sep 16, 2009 8:45 pm
my very hold 10 inch whit his 12 inch sonotube need a replacement BUT the sonotube I find at home depot or other are vey low guality tube ovaling and very...
14440
Jarvis Krumbein
kpjarvis2003
Sep 16, 2009 8:58 pm
Find a local Mason Supply (concrete, sand etc.) and they will be able to help you with heavir Sono-tube. Â Jarvis Krumbein ... From: suppjos...
14441
gyouman
gyouman...
Sep 16, 2009 8:59 pm
Look in the yellow pages or online for a contractor supply in your area (abc supply or something similar). If they won't sell retail, they can direct you to a...
14442
David V. Fansler
dvfansler
Sep 17, 2009 10:23 am
I am trying to compile a list/description of all the different strokes that people use in grinding/polishing/figuring a mirror. I have a number of books that...
14443
Ali Khan
ak6666666
Sep 17, 2009 10:32 am
Apart from COC 1/6+1/6 and chordal 40% and 25%, I have tried the following... 1. Mirror on top. Centre over center. Rotated mirror clockwise and...
14444
gregfurtman
Sep 17, 2009 11:18 am
Jack, Check out Yazoo Mills. I've used their tubes before and they are very high quality. http://www.yazoomills.com/mailing-tubes/heavy-duty-kraft.aspx...
14445
David V. Fansler
dvfansler
Sep 17, 2009 11:43 am
Thanks Ali, David ... Apart from COC 1/6+1/6 and chordal 40% and 25%, I have tried the following... 1. Mirror on top. Centre over center. Rotated mirror...
14446
Ali Khan
ak6666666
Sep 17, 2009 12:09 pm
Most welcome David, Ali ... From: David V. Fansler <dfansler@...> Subject: Re: [atm_free] Different Strokes . . . . To: atm_free@yahoogroups.com ...
14447
Mel Bartels
Mel_Bartels
Sep 18, 2009 3:07 am
Well, you have your tangential and choral strokes, both straight and elliptical, and you have your W and script strokes. Mel Bartels From:...
14448
catboat15@...
olewilly2000
Sep 18, 2009 4:04 am
What I did for my 8 inch f/8 Dob was to take the sonotube I had and wrapped it with a layer of fiberglass cloth and epoxy resin (I was building one of my...
14449
David V. Fansler
dvfansler
Sep 18, 2009 10:01 am
Thanks Mel David David V. Fansler s/v Annabelle dfansler@... www.dv-fansler.com From: atm_free@yahoogroups.com [mailto:atm_free@yahoogroups.com] On...
14450
astronomerbilal@...
astronomerbi...
Sep 18, 2009 1:17 pm
Hello everyone. I am Bilal. I am interested in mirror making of my own but there is a problem that I can not get full thickness mirror of ratio 6:1, I mean,...
14451
Mark Whitaker
tnut55
Sep 18, 2009 2:10 pm
Hi Bilal, It is not impossible to make a 12" mirror out 19mm glass. But my personal opinion is that for a first time mirror maker, a 12" is a bit of a stretch...
14452
Astronomer Bilal
astronomerbi...
Sep 18, 2009 5:07 pm
Hello Sir, As told you, maximum thickness is 19mm available, and Pyrex glass too not available, so simple glass would be used by me, and the size is 8"...
14453
Mark Whitaker
tnut55
Sep 18, 2009 5:46 pm
Hi, It is not my place to tell you what size mirror you should make. That is a personal decision. Only you know what your limits of perseverance. But I will...
