interesting video Gordon, it looks like you have done this before. i am interested in making a reflector telescope myself and have been reading various things about it on the net. one thing i was wondering is why do you use glass? wouldn't some type of ceramic make a good substrate? thanks for any insight you could give me.
Is it ok to flush water with a hose to washout the abbressive while machine is running ? I mean if the electrical stuff is isolated and if it is not important to have some water around :) Is there any problem with the mirror or tool if we wash abbressive completely while machine is running ?
Gordon I am new at mirror grinding. I am now in the process of collecting material and equipment to get started and there is a lot about this that I don't know. I am interested in your machine and the making of the grinding tools. I have a question for you. What is the curvature of the tool grinding surface is it the f 4.5 parabolic curvature. I would like a little info. on this. Maby it's there and I just don't see it.
@gordon: I also use the trick with the paper towels. However I use it only between 2 grain sizes, not in a series. Let's say I have 15, 9, 5 and 3 microns then I use it between 15 and 9, and between 5 and 3 . In between 9 and 5 microns I remove the tool and clean it, because otherwise 15 micron grains might come off the tool when working with 3 micron (for example during the paper towel cleaning / rinsing).
anybody else get dizzy watching this?
calebp9503 3 weeks ago
interesting video Gordon, it looks like you have done this before. i am interested in making a reflector telescope myself and have been reading various things about it on the net. one thing i was wondering is why do you use glass? wouldn't some type of ceramic make a good substrate? thanks for any insight you could give me.
Kugruabay 1 month ago
Thanks for the video!
lexichronicle2 7 months ago
Is it ok to flush water with a hose to washout the abbressive while machine is running ? I mean if the electrical stuff is isolated and if it is not important to have some water around :) Is there any problem with the mirror or tool if we wash abbressive completely while machine is running ?
myilmaz61 1 year ago
Gordon I am new at mirror grinding. I am now in the process of collecting material and equipment to get started and there is a lot about this that I don't know. I am interested in your machine and the making of the grinding tools. I have a question for you. What is the curvature of the tool grinding surface is it the f 4.5 parabolic curvature. I would like a little info. on this. Maby it's there and I just don't see it.
Thanks jadfd01
jadfd01 1 year ago
you telescope guys should really start with reading on diy cnc machine before setting out to grind your lenses and mirror.
the whole grinding aspect can be made dead easy with cnc motors and modules.
and they are DIY,not industrial prices,DIY prices...
search for DIY cnc forums beofre you invest in any machinery for grinding.
jeetendrag10acc2 1 year ago
@GordonWaite how many hours of work did it take to finish grinding?
hummerume 1 year ago
@gordon: I also use the trick with the paper towels. However I use it only between 2 grain sizes, not in a series. Let's say I have 15, 9, 5 and 3 microns then I use it between 15 and 9, and between 5 and 3 . In between 9 and 5 microns I remove the tool and clean it, because otherwise 15 micron grains might come off the tool when working with 3 micron (for example during the paper towel cleaning / rinsing).
webcamhilversum 1 year ago