custom sight glass

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custom sight glass

Postby rash » Tue May 16, 2017 4:41 pm

Anyone know where i can get custom size sight glasses? Is borosilicate something that glass places stock and can cut? Or is it safe enought to use thick standard glass? I need a couple at 56mm diameter.
Thanks,
Ash
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Re: custom sight glass

Postby Doubleuj » Tue May 16, 2017 5:07 pm

Thick glass isn't the same a borosilicate glass and it will break when heated by your still.
56mm isn't much bigger than 2", and fsd sell 2" sight glasses, could you modify to use them?
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Re: custom sight glass

Postby rash » Tue May 16, 2017 5:40 pm

Doubleuj wrote:Thick glass isn't the same a borosilicate glass and it will break when heated by your still.
56mm isn't much bigger than 2", and fsd sell 2" sight glasses, could you modify to use them?


I think the 2" ones by fsd are to suit a 2" ferule. So i think they are about 64mm?
rash
 
Posts: 90
Joined: Mon Jul 29, 2013 6:42 pm
Location: sunshine coast
equipment: Pot still
4 plate, 3" bubbler on 50ltr keg boiler.

Re: custom sight glass

Postby Doubleuj » Tue May 16, 2017 6:14 pm

rash wrote:
Doubleuj wrote:Thick glass isn't the same a borosilicate glass and it will break when heated by your still.
56mm isn't much bigger than 2", and fsd sell 2" sight glasses, could you modify to use them?


I think the 2" ones by fsd are to suit a 2" ferule. So i think they are about 64mm?


You could be right, I'll measure mine and let you know
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equipment: Don't want to get in trouble from bushy again so:
4" stainless glasser on a 50L boiler

Re: custom sight glass

Postby scythe » Wed May 17, 2017 1:50 pm

Maybe look at the 1.5" sight glasses then i think they are around 2" OD.
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Re: custom sight glass

Postby Zak Griffin » Wed May 17, 2017 2:10 pm

Im not sure if my sight glasses are borosilicate, they're out of instrument lenses.

They're about 10mm thick, I tested them by throwing them against the floor, hitting em with a hammer and by putting them in the freezer overnight then straight into boiling water. They passed the test for me.

They're about 54mm OD, from memory. If you get stuck i might be able to send you a couple, I think I've still got a heap.
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Re: custom sight glass

Postby Magnus » Wed May 17, 2017 2:31 pm

FSD 2" sight glass.

sg.jpg
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Re: custom sight glass

Postby rash » Wed May 17, 2017 3:33 pm

Thanks for your help guys, and for your offer Zak. 10mm is a bit too thick to work with what i had in mind.. My sg tee sections have a thread on them the same as the nut on a 2" sink waste. So was thinking of using sink waste nuts to sandwich the glass.
I think now that i will be best off grabbing a couple of 2" weld on sight glass kits.
Thanks again,
Ash
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Posts: 90
Joined: Mon Jul 29, 2013 6:42 pm
Location: sunshine coast
equipment: Pot still
4 plate, 3" bubbler on 50ltr keg boiler.


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