#1  
Old 09-01-2019, 09:41 AM
gallardo (Anthony Gallard)
Registered User

gallardo is offline
 
Join Date: Jan 2018
Location: Littleton, Colorado
Posts: 2
6" mirror blank polishing

Hi to all. hope I am in the right place to post this question. I am new to this forum and not really sure I am doing this post correctly if not please let me know.

I am polishing a 6" mirror blank and cannot seem to get the last 3/8" edge to polish out does anyone have any suggestions or do I just keep polishing on? I have put in about 16 hours and still going so it maybe that I am doing something wrong. Doing 1/3 COC.

Thank you in advance
Reply With Quote
  #2  
Old 10-01-2019, 12:26 AM
croweater (Richard)
Don't Panic!

croweater is offline
 
Join Date: Feb 2015
Location: Millicent, South Australia
Posts: 219
Hi Anthony. Welcome to this forum. Just a suggestion. Maybe post this question in " ATM and DIY Projects "section which is in "Equipment" section of Forum. The mirror making crew may not see your question in this section. They will certainly help you with your queries. Ask away Cheers, Richard

Last edited by croweater; 10-01-2019 at 12:34 AM. Reason: correction
Reply With Quote
  #3  
Old 10-01-2019, 11:29 PM
Saturnine (Jeff)
Registered User

Saturnine is offline
 
Join Date: Jul 2008
Location: Wollongong
Posts: 767
It does sound as if you have an turned down edge from your fine grinding.
You could pose the question on the Cloudy Nights forums, that are based in the USA, they have lots of mirror makers on there.
Reply With Quote
  #4  
Old 11-01-2019, 10:30 PM
Kelly974's Avatar
Kelly974
Registered User

Kelly974 is offline
 
Join Date: Jan 2019
Location: Uxbridge
Posts: 1
Saturnine is right, your best bet is to post this question on Cloudy Nights forums. There are some fantastic mirrors makers that would certainly help you.
Reply With Quote
  #5  
Old 14-01-2019, 03:24 AM
gallardo (Anthony Gallard)
Registered User

gallardo is offline
 
Join Date: Jan 2018
Location: Littleton, Colorado
Posts: 2
6" mirror

Thank you and I will do as you suggest.
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 02:17 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Advertisement
Lunatico Astronomical
Advertisement
OzScopes Authorised Dealer
Advertisement
Celestron Australia
Advertisement
Meade Australia
Advertisement
SkyWatcher Australia
Advertisement
NexDome Observatories
Advertisement
Bintel
Advertisement
Astronomy and Electronics Centre
Advertisement