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Drew, I've been lurking in the Vacuum-X group for a few years; I have an old (like nice wood case old) Sloan Omni II Deposition Control Master + Sloan SCR 7.5 (35A) that are about to hit the dust bin

Attila, This may be old to everybody else but could you explain the IBAD you have. Is it for aluminization or SiO overcoating or both ??? I understand tungsten coil evaporation process very well but

Hi Alex, I can explain only my experience. Actually I don't use those baffles. Because I do IBAD coating for mirrors. During this process my ion gun needs gas flow to work properly. To maintain a

Based on the pictures uploaded by David and Attila (thank you both!), it is pretty obvious, that the baffle has quite some complexity. Most likely, a baffle maybe not so easy to build on your own. So,

Attila, thanks for uploading the photo. This helps me a lot to understand the baffle in a much better way!

Hi David, thanks for uploading the photo.

Hi Alex, I put 3 photos to the Baffle photo album. The Balzers baffle is a 50 years old construction made out of brass. The Tesla baffle is 30 years construction made out of copper. Both are water

I've uploaded pictures of a baffle we recently took off a system (http://groups.yahoo.com/group/VacuumX/photos/album/1665179354/pic/list). There's a disk with an elliptical cross section (think flying

Hey gentleman, I mean it is nice that you all are taking your time to give me a reply .... but ... well ... did anybody read my question? :-)

What's it like when you put the pumpkin into the vacuum chamber? ;-} ? Guy Brandenburg, Washington, DC? http://gfbrandenburg.wordpress.com/ http://home.earthlink.net/~gfbranden/GFB_Home_Page.html

I have an entire Veeco VE400 system that I could do without. ?It has I believe a 4" diff pump, cryo pump and everything you need. ?The chamber ia 18"X 29" pyrex with lifter. ?There is also a HV

Hi to everybody, ? ??????? Does anybody from the group knows how much will cost to build one mirror coating vacuum chamber?machine?which can handle maximum 24" telescope mirror blanks? The

I have a 4" diff pump with 4" gate valve and 4" baffle for sale........ $1500 for it all. Contact me off list if you want details. Drew in sunny Florida

Hi everybody, I'm a new guy in the group. I joint this, because I have serious plans to build my own vacuum-chamber (10E-5 to 10E-7 mBar). I decided to go with a diffusion pump and a system as already

Hey guys, Here is my latest addition to "baby George". I melted the previous high amp pass thru by putting way to much current thru it. The previous unit was made of 9 each 1/4" bolts passing thru

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Sorry I didn't get to this sooner (my year end finals start Monday).... You want the edge to be proud enough to keep the O-ring from catching on the lip, but also such that there is room to give the

Hi Russell, You'd need to put a flange on both halves and then clamp an O-ring between them, Weld them on a touch below the lip so that the O-ring actually seats against the wall and not the flange

Thomas, Another question occurred to me. ?Do you design the O-ring size and proudness of the wall(s) so that there is a gap between the top and bottom wall or do you?squeeze?the flanges until the

Thanks, Thomas. ?I was thinking about the flange but was going to make the wall flush. Glad you mentioned that. ?Now does one leave the wall proud on both the top and bottom section such that the