... on ... What is your setup? Is the turntable driven or do you walk around it? I'm trying to imagine why you would rotate a turntable every 10 strokes unless...
How much is the turntable rotating? If you're doing some large value like 90deg., you may be grinding astigmatism into the mirror. The old method was to walk...
I was cruising the local mall yesterday looking at the... and happened to wander into the Brookstone store. There I found an INCREDIBLY bright white LED...
Richard, Visit to the Chinese store. I found a laser pointer incorporating very bright white LED flash light on the other end. With set of spare batteries for...
You can usually find them in cheap key chain flash lights as well. I bought some in red and white for $2 at Wallgreen drug store. You can get just the led for...
I have a manual turntable mounted on a table top. I typically sit, or stand in one spot. If I'm polishing MOT, I put a piece of tape to mark my starting...
I am not going to tell you how to measure astigmatism; I have posted plenty on this before, and it is mostly ignored. I don't think the popular strehl...
You need to turn the mirror CONTINUOUSLY. You don't need to turn the tool. ... From: To: atm_free@yahoogroups.com Sent: 3/31/2004 2:26:23 AM Subject: Re:...
... happened to wander into the Brookstone store. There I found an INCREDIBLY bright white LED flashlight. My immediate thought was that this LED might be...
Craig... If you are NOT ROTATING THE DISK IN RELATION TO THE TURNTABLE, you are grinding/polishing in whatever astigmatism is present in the turntable. Ditch...
Thanks Richard. I read your previous posting on measureing astigmatism and did something similar by using a mask with 2 sets of cutouts 90 degrees apart,...
Ken, thanks for the advice. I locked down the turntable so that it won't turn (it already has cleats) and started walking around the table. I did a TOT COC...
Craig wrote:- ... I've been doing W strokes without moving on all my mirrors with no problems. I do a W with about 5 forward and 5 backward strokes then take...
It is ok to push on the edges to help things move. Just don't exert any vertical force there. Try to visualize that you are polishing a piece of saran wrap...
Sounds like the near perfect receipie for astigmatism. 90 deg. plus 90 deg. equals 180 deg.! You want to do only about 5-10 degrees of rotation to emulate a...
Thom, The EC version has the computer control. The ETX-90 and ETX-90RA have only clock drives. Nice optics in mine. The airlines killed it ... Joe Message:...
Hey Joseph - thanks for your reply! How exactly did the airlines kill yours? I'm planning a trip to Brazil next year, and wanted to take one with me when I...
... wrote: cast aside what is written in authoritative books, open your mind, and let the glass teach you. ... Be one with the force young Skywalker.......
Hi All, In order to repair my astigmatic mirror I've decided to invest my time and energy in putting a grinding machine together. I currently have the bench...
John, If the drive pin can reach from the center of the bottom disk to the edge of the disk, you'll be able to work the whole rotating mirror. I prefer to be...
That mirror was 8" x 3.8" thick, curve formed by slumping. ... From: Peter To: atm_free@yahoogroups.com Sent: 4/3/2004 5:01:21 AM Subject: RE: [atm_free] More...
... the ... Ken, Let me see if I understand this correctly. If I have a 29" turntable my overarm post for the tool should extend 14.5" to mirror center. Is it...
Hi John, If my understanding is correct (I hope so as this is how my machine works) the pin on the overarm that connects to the tool should also be able to ...
Most machines use one stroke from edge to edge and the arm is adjustable both in length of stroke and position relative to the COC condition. You caan get by...
... works) ... able to ... the ... the ... overlap ... Thanks for Replying Charles, I believe I understand now how the tool must work with the overarm on the...
... COC ... Hey Ken, How does the motor pass the tool back and forth across the glass in a linear motion? What reverses the direction of the tool on the...
In the photo's on the grops photo section, you can see how the Generator is made. I call that thing between the "bridge" rails a sled for lack of a better...
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