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Hi James, Visual appearance can be very deceiving. I can do a run or two and some testing, no problem. I have found pure aluminum to be as high as 90% and sometimes 91%. I usually get a better coating

If you can do it a stack for a silver mirror that is reported to be highly stable is: Glass - NiCrNx (8?) - silver (1200?) - NiCrNx(2-8?) - SiNx (100?) [146a]. The NiCrNx seems to act as a

Hi, I have also silver coated glass and used Zirconium Dioxide(ZrO2) and SiO2 as enhancing layers. ZrO2 is wickedly tough and requires a great deal of power to evaporate. The chamber become very hot

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the VacuumX group. File : /vdep.JPG Uploaded by : sloanpk2000 <amisiuk@...>

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the VacuumX group. File : /vdep1.JPG Uploaded by : sloanpk2000 <amisiuk@...>

Hi, This is one of the 3 systems used by Sirius Optics. Its actually my least favorite. Tp the left is the chiller. We maintain all components at 20C while in operation. The chamber is 20" diameter.

Hi, This image shows the open chamber. We have several planetaries. The one visible is used for smaller interference filters and AR coats. We line the chamber with aluminum foil for easier cleaning.

Looking for a glass bell jar that is at least 7.5" in inside diameter and 21" in inside height. If anyone has any to sell or point me to a cheap source, please let me know. Thanks.

Don't know what you are going to use to evacuate the chamber or do with it once vacuumed but have you considered a plastic/acrylic tube with an end plate of aluminum or brass instead? You might be

Thanks, Ken. I'm actually not going to use it to create a vacuum but rather to house and protect a painting painted on a bottle. I was referred to this group by an Ebay seller. Carlos Lazaro wrote:

Yeah... I frequent the eBay search [ "bell jar" -plath ] quite often. There's always some of those glass cloche jars and short display jars but I've never seen one that long (tall). For your use, I'd

I have a used, surplus, Gast vacuum pump, never used in 25 years, which I recently fired up to provide air to a "sparger" in a PCB etchant tank. I had to clean up the motor a bit so it would turn. At

Greetings By virtue of your membership in a 'tinkering' kind of group I would suggest that you open up said pump obtain carbon of a close size and make the new blades. Carbon is machinable just use

Hi Darald- Machine carbon? To a high precision fit? As Peanuts said to Lucy, you have very high ambitious - for me <g>. I am sure it would be beyond my skills. I am reluctant to simply take the pump

Greetings If I had a shop or worked in one where I had access to equipment for after hours work I would say no problemo!! I worked in a shop where we made carbon bushings for pump shaft whatevers.

Try Duniway Stockroom ( www.duniway.com/ ) for the vanes or re-build kit. My books are already packed up so I can't look it up for you. Ken Hunter

My project is the gradual restoration of an old, (~1960 I'm guessing) Kinney vacuum coater, (Type SC-3). The system is based on a 2" diffusion pump, 12" dia X 12" tall bell jar, and a Sargent-Welch

Hi Darald - thanks for the reply, it is helpful. For reasons unknown, the Gast pump started putting out lots of air recently. It has been running non-stop for several days so maybe something wore into

Thanks Ken - They did not have any Gast kits, are the names they use "generic"? And if those are cheap prices, what are the expensive ones like? <g> Anyway, my pump inexplicably started pumping more

Greetings I am currently working on a vacuum truck and every 8 to 10 running hours I flush the pump with a 3:1 mixture of diesel and ATF oil. The ratio could be different in your application because I