Film-Tech Forum ARCHIVE: Washing Dolby 3D Glasses

This is topic Washing Dolby 3D Glasses in forum Digital Cinema Forum at Film-Tech Forum ARCHIVE.

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Posted by Manny Knowles (Member # 1171) on 02-08-2011, 09:43 AM:

We have those new wire trays for the Dolby 3D glasses. These trays are different from the ones shown in the Dolby training video.

The new trays can hold up to 48 pairs of the Cat 834 glasses, or 60 pairs of the new plastic Cat 830 glasses. And it looks like maybe 2 baskets can fit into the Knight commercial dishwasher.

Has anybody had any luck stacking that many pairs of glasses neatly like in the promotional photograph? Ours are not stacking too nice.

Looks like we have the older Cat 830 style. After about the 2nd or 3rd level, they start sliding all into each other. My concern is that they won't all get cleaned.

Am I right to worry about this?

(I haven't been able to test the washer yet because it was just installed and now I'm waiting for the ECO chemical dealers to make their site visit to finish setting it up.)

Posted by Sam D. Chavez (Member # 1841) on 02-08-2011, 10:41 AM:

There is new tray from Marlin to deal with Cat. No. 832 glasses which is what you should have. the 830's were not intended for the USA cinemas. Long story not for discussion here.

I'll find the notice and send it to you.

Posted by Mike Blakesley (Member # 26) on 02-08-2011, 10:58 AM:

Sam - could you send that to me, too? We have those same trays and while they do work well, the glasses do tend to nest together.

Posted by Manny Knowles (Member # 1171) on 02-08-2011, 12:17 PM:

quote: Sam D. Chavez
Long story not for discussion here.

Those often make the BEST stories!

But seriously, Sam - any reason I get zero results when Googling "Dolby Cat 832" ?

Mike - what have you been doing about the nesting situation? Do you stack fewer? or do you toss 'em in and let the washer somehow deal with the nesting?

And does the washer really only take 3min to do the job? [Eek!]

Posted by Mike Blakesley (Member # 26) on 02-08-2011, 05:29 PM:

We just stack 'em 4 deep on each side -- if you put them in carefully they'll usually stay up the way they're supposed to.

The washer we have only takes about 90 seconds. (Knight KLE150, undercounter model)

Posted by Jack Bauer (Member # 6277) on 05-15-2011, 03:08 AM:

@Sam
I dont want you to elaborate on the "long story" about differences between cat830 and cat832 glasses, but a few words will be appreciated.
Are the lens the same? I dont care if it is only a matter of frame design.
Presently I am using 834's but I want to go plastic. I can get either 830 or 832. Which one would you advise?

Thanks. Jack

Posted by Steve Guttag (Member # 268) on 05-15-2011, 11:19 AM:

Cat 832...that is an easy one.

Posted by Carsten Kurz (Member # 5396) on 05-20-2011, 07:03 AM:

Dolbys current official pricelist quotes CAT834 at 17$, CAT832 at 12$.

http://www.dolby.com/professional/products/cinema/digital-cinema-price-list.html

I assume CAT 834 are the classic ones with spherical 'real' glas, while the cheaper CAT832 are the new type with 'silver foil' glasses.

Now what is CAT 830? Any pictures?

And how does this fit in?

http://www.marlinwire.com/docs/Dolby3D_PlasticReusableGlasses_Dealers.pdf

- Carsten

Posted by Sam D. Chavez (Member # 1841) on 05-20-2011, 07:58 AM:

I believe the 830 was discontinued. The 832 is the replacement.

The 834's will take more wash cycles but I don't recall the data.

Posted by Jack Bauer (Member # 6277) on 05-20-2011, 08:27 AM:

My data:
http://www.avsforum.com/avs-vb/showthread.php?p=20459886#post20459886
Do you agree? Is cat832 really that design?

Jack

Posted by Manny Knowles (Member # 1171) on 04-03-2012, 01:38 PM:

I've noticed that calibrating the Knight (KLE-175GT) washer can be a bit tricky...

The wash cycle re-uses the leftover water from the rinse cycle. And, after opening the washer, removing clean glasses and inserting used ones, the temperature of that water drops by about 10 degrees (F).

This means that the rinse cycle needs to be around 130F in order for the wash cycle to be at 120F, which is the minimum for the chemicals to work.

However, the glasses themselves (2 sets of 60pr) will cool the water by about 12F.

So the rinse cycle (empty) needs to be around 140F. This translates to a rinse cycle around 130F with glasses loaded. The subsequent wash cycle (with glasses loaded) is around 120F.

Anybody notice similar results with the Knight washer and the high-capacity trays (pictured in the original post) ?

I'm going to measure the water temperature with a different thermometer, just to make sure that the built-in one is reading right. I've got a few at home that can be calibrated using boiling or iced water.

(BTW my glasses don't look like any of the ones pictured in that last link.)

Posted by Carsten Kurz (Member # 5396) on 04-03-2012, 06:47 PM:

Can you attach a photo?

- Carsten

Posted by Manny Knowles (Member # 1171) on 04-03-2012, 09:26 PM:

Here are a few pix of my Dolby 3D glasses:

...and (since this is how the thread got started) here they are "nesting" in the washing trays:

Posted by Sam D. Chavez (Member # 1841) on 04-03-2012, 11:32 PM:

Cat. No. 834Z

Posted by Manny Knowles (Member # 1171) on 04-03-2012, 11:37 PM:

Haha -- we crossed in the cloud!

...and the Marlin Wire Website has been updated to state that the 834's are a "loose fit" in the 780004 basket, which is probably what I have.

I'm curious about the other basket they have for the 834's (780006) -- so far, no pic on their site.

Posted by Mike Blakesley (Member # 26) on 04-04-2012, 04:25 PM:

Manny - try putting the glasses in the rack upside-down and your problem will magically lessen.

Posted by Manny Knowles (Member # 1171) on 04-04-2012, 05:16 PM:

Thanks, Mike - Alas, that did not work for me.

I get the best result when I stack them in alternating (nose up/nose down) fashion.

Maybe you have different glasses, or perhaps the correct tray, or maybe I didn't understand exactly what you meant (although it seemed pretty clear).

Would you please post a pic?

Posted by Mike Blakesley (Member # 26) on 05-11-2012, 11:25 PM:

Sorry I didn't get to this sooner. You just put the glasses in the rack upside down, alternating from one side to the other.

I have also found that it's easier to make the glasses stack properly when you load the rack horizontally -- that is, you fill the entire bottom layer first, then the next layer up --- rather than doing one stack at a time. This keeps you from "bumping" the glasses into the adjacent glasses as you stack them.

I'm pretty sure we have the same rack as in the original pic at the top of this thread.

Posted by Manny Knowles (Member # 1171) on 05-11-2012, 11:30 PM:

Thanks! I'll try that.

I hope mine look as nice as yours.

Posted by Matt Wooten (Member # 7200) on 11-05-2012, 03:16 PM:

Hello, everyone. New member reviving an old thread. Not the best way to start things off, I know. Sorry about that.

We are about to get a Dolby 3D system and I have ordered the appropriate baskets from Marlin Wire for washing the glasses. Marlin tells me that the baskets are 8.5" tall, which makes them about half an inch taller than the spacing in most dish racks (the aluminum caster footed carts for holding dish baskets).

It seems that the baskets may be tall on the front and back lips, but shorter on the sides where problems may arise. Can anyone tell me what brand of racks they are using to transport and store glasses and what the spacing is in those racks?

I'm looking at this: http://www.foodservicewarehouse.com/channel-mfg/grr-8/p350307.aspx

Thanks for any help you can provide!

MATT

Posted by Manny Knowles (Member # 1171) on 11-05-2012, 05:46 PM:

Welcome -- reviving an old thread is preferable to starting a new thread for a topic that already exists -- so, you're fine.

The Marlin racks -- front/back are taller, and the sides shorter -- on the top.

The bottom is designed to "mate" with the tops, to allow stacking. (The Knight dishwasher will accommodate a pair of stacked baskets.)

I'm not at work now, so I can't take measurements.

Posted by Mike Blakesley (Member # 26) on 11-05-2012, 06:58 PM:

Just for a point of info here....we have the "undercounter" model of dishwasher which can only handle one rack at a time. (of the current model racks, that is....I'm not sure about the older model.)

Posted by Matt Wooten (Member # 7200) on 11-06-2012, 08:54 AM:

We also have an undercounter machine with a total vertical clearance of 16", so it looks like we will be doing one basket at a time as well.

Thanks for the quick responses. Please let me know what kind of trolleys/racks you guys are using for these baskets. Industry standards seem to be at 8" vertical spacing, so I'm nervous as to how these 8.5" Marlin baskets will fit, if at all.

Thanks again, MATT

Posted by Manny Knowles (Member # 1171) on 11-08-2012, 04:58 PM:

Measured my basket. (Oh my!)

And it is 8.5" (Oh my!!!)

Posted by Matt Wooten (Member # 7200) on 11-12-2012, 09:07 AM:

Well, I couldn't find any carts/trollies that could confirm spacing sufficient for these 8.5" tall baskets, so I grabbed some random junk tray carts off of Craigs List and I have a handy fellow I know cutting them up and welding them back together into something that will work.

I will only be able to get 4 baskets in each cart, and it sure won't be pretty, but it should get the job done.

Posted by Manny Knowles (Member # 1171) on 11-12-2012, 02:10 PM:

If you went with the cart that Dolby recommends, you could get 10 baskets on a cart.

Posted by Matt Wooten (Member # 7200) on 11-19-2012, 12:17 PM:

I inquired with Dolby about carts and they had no recommendations, nor did Marlin wire. If Dolby has some sort of recommendation on their website and I missed it, I will be most irate.

Posted by Fred L West (Member # 6038) on 12-19-2012, 02:05 PM:

We're getting ready to install our digital system with Dolby 3D and wondering about the options for cleaning the glasses. I've talked to someone with 2 3D screens and they hand wipe/clean theirs because the lack of room for a dishwasher plus the cost of the machine. Is anyone else hand washing.
I know what Dolby recommends for a washer but that's out of our budget would like something small and under the counter, also wondering why just a home type washer wouldn't work, just seems like there should be a better option than spending several thousand for cleaning.

Posted by Mike Blakesley (Member # 26) on 12-19-2012, 02:39 PM:

If you opt for hand-wiping, trust me you will drive yourself crazy unless you can find some ambitious staff willing to do it.

We bought a dishwasher but it took longer to arrive than it was supposed to, so for our first six weeks of 3-D movies we were hand-wiping glasses. That's an experience I do not wish to repeat! Keep in mind that you can't just wipe the lenses...you need to SANTITIZE the glasses, plus any glasses worn by kids will have sticky goo on them that you will have to get off.

We still hand-wipe many of the lenses to get water spots off, but that's way easier/faster than spraying and wiping the complete units.

A home-type dishwasher might work but I'd be curious how you would get the glasses to sit properly in the machine. Might be possible with some modifications. If you come up with something be sure to post photos!

Posted by Fred L West (Member # 6038) on 12-19-2012, 03:14 PM:

Mike,

I know I read somewhere the type of washer you have but would you mind telling me again, any idea of the kind of money you spent? I don't like the idea of hand cleaning but at least it will buy me some time until I figure the best options.

Posted by Sam D. Chavez (Member # 1841) on 12-19-2012, 03:15 PM:

I believe Proctor has an under counter model dishwasher that works well with Dolby 3D Glasses and for less money.

Ask your dealer or contact Proctor directly.

Posted by Chris Daigle (Member # 7347) on 12-20-2012, 10:02 AM:

New to the forum, but thought I'd post my two cents. We bought a used Hobart commercial washer from a restaurant supply company for about $1000 a couple years ago. We looked at regular residential washers but the cycle time was way too long vs a commercial machine.

Also to those looking for cart ideas for the Dolby glasses, we made our own from a standard rack that we bought for $80 from Lowes. Its a 74"high/48"wide/18"deep rack, but we split it into two units. We bought an extra shelf so we had a total of 6 and then just bought some casters and screwed them into the bottom. We then had some PVC signs made up from a local sign guy and had two rolling racks for a couple hundred bucks. We also made a collection bucket on wheels by buying a smaller 36"hx24"wX18"deep rack for $30, cut out some of the top rack and mounted a plastic bucket into it. An employee stands at the door at the end of the show, puts the glasses in and rolls it into the room where we re-rack them and wash them. Its been working great. I attached a picture for anyone interested.