Search found 493 matches

by ian_krase
Tue Apr 18, 2017 8:08 am
Forum: Images du Jour
Topic: Making My First Successful Film
Replies: 45
Views: 6952

Re: Making My First Successful Film

I managed to use sharpie marker as a resist for a lift-off process, though I think i contaminated my film... somehow. Actual pictures coming tomorrow... because I am tired.
by ian_krase
Mon Apr 17, 2017 4:46 am
Forum: New User Chat Area
Topic: How would you go about stepping up dc power supply voltage?
Replies: 17
Views: 3420

Re: How would you go about stepping up dc power supply volta

I think that the most common strategy is to start with high voltage AC from a transformer and/or a solid state switching driver. AC can then be multiplied with a voltage multiplier. Conveniently, the individual elements of the voltage multiplier often only need to withstand the input voltage, not th...
by ian_krase
Wed Apr 12, 2017 5:04 am
Forum: Images du Jour
Topic: Making My First Successful Film
Replies: 45
Views: 6952

Re: Making My First Successful Film

IMG_20170411_211946.jpg Well, my labors have borne fruit. Today, I RCA cleaned the substrate and, without touching it with either gloved or bare hands, transferred it to the sputtering chamber clamp. The result was a film that was not pulled off with scotch tape, and which accumulated pinholes when...
by ian_krase
Mon Apr 10, 2017 6:08 am
Forum: New User Chat Area
Topic: Thermocouple gauge vacuum connection
Replies: 3
Views: 776

Re: Thermocouple gauge vacuum connection

Oh, is that what Swagelok brand Vac Goop is for?

Also possibly Apiezon Q. (The marketing materials make that stuff sound really great but (like all apiezon) it's so expensive in the quantity it's sold in. Wish they had trial sizes.)
by ian_krase
Sat Apr 08, 2017 6:48 am
Forum: New User Chat Area
Topic: Question on butterfly valves.
Replies: 13
Views: 2217

Re: Question on butterfly valves.

Sealing butterfly valves definitely exist; Ideal Vacuum sells them. They have pretty thick vanes, though, and actually restrict the tube aperture a fair amount in small sizes. (though much less than angle bellows valves). On the other hand, a butterfly valve that doesn't seal would make sense for a ...
by ian_krase
Sat Apr 08, 2017 6:44 am
Forum: New User Chat Area
Topic: Thermocouple gauge vacuum connection
Replies: 3
Views: 776

Re: Thermocouple gauge vacuum connection

First, just to clarify, no normal fusor works at what are considered UHV pressures. Demo fusors work at rough vacuum, and real fusors are pumped to non-ultra High Vacuum, and then have deuterium gas bled into them until they are back in the high vacuum range -- with the high vacuum pump running but ...
by ian_krase
Wed Apr 05, 2017 2:49 am
Forum: Images du Jour
Topic: Making My First Successful Film
Replies: 45
Views: 6952

Re: Making My First Successful Film

I am aware of the four-point method, but I don't think I have the equipment to *do* it, and certainly not without messing around with a bunch of instrumentation. I mostly just wanted to get a comparison to my silver-on-glass and to the dead short of bulk metal plate. I haven't *smelted* anything lat...
by ian_krase
Wed Apr 05, 2017 2:22 am
Forum: New User Chat Area
Topic: Vacuum pump fittings
Replies: 3
Views: 936

Re: Vacuum pump fittings

You can definitely get 45 deg flare fittings at the hardware store. Likely you can even find an appropriate flare-to-NPT or flare nipple adapter and save yourself the cost of a flare tool and length of tubing. Though that might not be a bad purchase, flare is supposed to be a fairly good tubing conn...
by ian_krase
Tue Apr 04, 2017 6:05 am
Forum: Images du Jour
Topic: Making My First Successful Film
Replies: 45
Views: 6952

Re: Making My First Successful Film

Today in "Ian messes around with sputtering while waiting to get guidance and setup for cleaning glass substrates", I tried sputtering silver onto a piece of paper (from a clothes price tag). It worked, to my surprise (since my other organic substrates failed miserably with goop). I had to run it in...
by ian_krase
Mon Apr 03, 2017 9:24 am
Forum: The Trading Post
Topic: Sources for Fusor Related Items
Replies: 20
Views: 12570

Re: Sources for Fusor Related Items

LDS is particularly notable for their compression ports, which are very expensive from other sources. Notably, Duniway has nicer KF clamps than most vendors. https://accuglassproducts.com/home.php has a variety of feedthroughs including some highly specialized ones, ones with loads and loads of pins...