Search found 454 matches

by ian_krase
Wed Feb 08, 2017 8:39 pm
Forum: Vacuum Technology (& FAQs)
Topic: What to Make Of Pfeiffer Oil Viscosity?
Replies: 2
Views: 2014

Re: What to Make Of Pfeiffer Oil Viscosity?

Ok, thank you.

Looking at the table, it looks like P3 is more viscous hot, but I can see how it may not matter much.
by ian_krase
Wed Feb 08, 2017 8:18 am
Forum: Vacuum Technology (& FAQs)
Topic: What to Make Of Pfeiffer Oil Viscosity?
Replies: 2
Views: 2014

What to Make Of Pfeiffer Oil Viscosity?

Pfeiffer officially specifies that you use their own P3 oil in their small rotary vane pumps such as the Duo 2.5 (It would be pretty funny if they recommended that you use Leybold's oil, after all!) This is a little peculiar. P3 is a bit less than twice as viscous as the standard oil specified for m...
by ian_krase
Fri Jan 06, 2017 4:43 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Cutting Alumina
Replies: 18
Views: 12468

Re: Cutting Alumina

Isn't alumina-silica or other type of ceramic usually significantly softer than straight alumina?
by ian_krase
Thu Jan 05, 2017 5:32 am
Forum: Fusor Construction & Operation (& FAQs)
Topic: Cutting Alumina
Replies: 18
Views: 12468

Re: Cutting Alumina

You might be able to just burn through it at the cost of inexpensive normal cutoff wheels. Or score and snap it, potentially.

Also, concentrated NaOH (drano?) will dissolve alumina though I suspect this would be very slow even if heated.