Yes I'm afraid I have another adaptor.

600 grit ALOX is bad news. At dvinfo, we started using 1500 grit if I remember correctly, then went to 5 micron, then 3. At this level, on grit charts, we're talking tens of thousands instead of hundreds for grit sizes. You will not get anywhere with 600 grits. Ironically, you will also not get anywhere with sub-1micron grit
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This is really important.
Now that we know that it is between 1500 and a 1000 what's the best method you've found for the actual grinding process? how many steps dp you take and ensure that you are getting the best effect possible?
 
I have a flat lapidary grinder in my shop. I just may do some experimenting this weekend. I've actually considered making my own GG but have hesitated because of the grain issue. Then I keep thinking about my vibrating cell phone and what it would take to vibrate that GG. One thought just leads to another and another and another.......it just doesn't end.

Marlene
 
We used the piezo electric component in some of the outdated resp, Therapy equipment many moons ago, I wonder If I can find some of the motors somewhere. Great idea.
 
Actual grinding process is outlined on a site linked to in one of the threads here -- just Google it, and you'll see the basic technique somewhere.

Essentially you need one large 4"x4" 1/4 inch thick piece of glass (the grinder), the glass to be ground (Hoya UV filter, uncoated), newspaper, some 2" masking tape (to cover one side of the glass for protection), water and aluminum oxide between 1 and 3 microns.

You remove the UV filter from its ring (use a small, 1/16th inch flathead screwdriver to pry off the retainer); tape up one side of the filter, put it tape-side down on the newpaper, mix some water and al-ox in a bowel, then spoon it ontop of the glass; place the "grinder" ontop and move it in a circle repeatedly until the water evaporates; pull the GG free; put more water/al-ox mix on glass; repeat. Do this for 20 mins, making sure that every time you grind the glass, you use al-ox properly mixed with water (dry al-ox scratches and then you're screwed), and you're set.

Rinse the glass pieces; check for scratches; if they're there, keep grinding.

To quick dry your GG and check for scratches periodically -- use compressed air.
 
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Great! I also found that Arri makes Ground Glass on demand. I don't know the the specs but this might be another option for people.
All the DIY information makes it near impossible not to try.
 
and remember if grinding your own glass to do it in a "figure 8" while rotating the glass 1/4 turn every 4 or 5 swirls. Dont do it in circles or you will get swirl marks.
 
Has anyone tried using plain acid etched glass?

acidetched.jpg
http://www.riderglass.com/images/acidetched.jpg
 
yah has anyone tried that?
ill give it a shot.. where can i get the materials to etch glass? michaels arts and crafts maybe?
 
Actually I believe you can buy it already etched. I've seen it around. A google search should bring some stuff up.
 
Before you buy, check out the threads over at dvinfo.net. I believe somebody did that already and the results weren't impressive. Do a search over there..see what comes up.
 
Great! I also found that Arri makes Ground Glass on demand. I don't know the the specs but this might be another option for people.
All the DIY information makes it near impossible not to try.
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As far as i know the Arri GG is a "Lichtleiterplatte" - my adapter uses a old arriflex GG.
The Images are CC and minimal after-sharped http://www.smeangol.com/35EV2/Osa35ev2.htm
These "LLPs" are a minimal sharper and brighter than my microwax(not selfmade), but produce a intensive Hotspot-i am still searching for condensor.
Btw - great thread!
Max from Aachen, near Cologne
 
twocik23 said:
Hi Edweirdo, I just wanted to say good job on the 35mm! Did you get or make a rod system for it yet?
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I have not built support rods as the ones made by Cavision are well built and reasonably priced. I couldn’t make anything better than that without charging more than their $160 price tag.

I have however built an accessory that attached to the front of their rod system since their own is too short for some designs. See page 5 post #42. However I have since improved this adapter since that photo: I have added an adjustable support strap that goes over the top of the 35mm adapter. This not only takes the weight off the DVX, but also stabilizes the adapter from getting bumped left, right, up or down.

I will post new pics and plans later tonight. It won’t totally protect your DVX if you slam your adapter into something hard or drop it (nothing will actually), but it will take the stress off the threads during operation.

Thanks,

-Ed
 
Maybe a bit OT but I just need to vent regarding purchases from Ebay, especially when you're anxious to get started on a DIY project. IN THIS COMPETIVE MARKET....WHY DOES ANY SELLER WAIT 5 DAYS AFTER PAYMENT TO MAIL AN ITEM?. OK.....I feel better now.

Marlene
 
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