Glass for sightglass

VM CM LM Flutes Plate

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Glass for sightglass

Postby djc » Tue Feb 15, 2011 7:42 am

What is the best source for glass to use in a sight glass?
Is there somewhere to order 2" precut circles?
Should I get a diamond hole saw and use window glasa?
Any advice is welcome.
Thanks
Dennis
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Re: Glass for sightglass

Postby Samohon » Tue Feb 15, 2011 9:22 am

I know that the flute builders (Olddog, Kentucky Shinner, ect;) cut their own, they should chime in shortly..

I'm getting all the materials form my Flute build together atm and I will be cutting my own glass from a diamond hole saw and 4mm (float) window glass...
A drill-press will make this considerably easier...

Do a search for sight glass, Flute, ect;...

Hope it helps man... :wink:
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Re: Glass for sightglass

Postby kenfyoozed » Tue Feb 15, 2011 9:38 am

There was talk in the flute thread about this subject. Many used the diamond hole saw. I think there was also talk of using watch faces. You could also get in vouch with someone who built theirs and get them to make a few.
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Re: Glass for sightglass

Postby myles » Tue Feb 15, 2011 10:06 am

I got mine off the shelf from a boilerhouse supplier. everything under the sun for steam boilers including

"Backend Sight Glasses"

They are used to look into the furnace part of the boiler. Try googling that phrase and see if there is a supplier in your area that deals with industial boilers. They do ship internationally too.

http://www.ibhs.co.uk/
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Re: Glass for sightglass

Postby coppercreature » Tue Feb 15, 2011 10:10 am

Got mine from McMaster:http://www.mcmaster.com/#borosilicate-glass/=b1o3e9 - all different sizes available.
2" dia, 1m copper VM column with 1 1/4" gate. 1/2 keg pot still.
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Re: Glass for sightglass

Postby NineInchNails » Tue Feb 15, 2011 3:19 pm

Check out www.stpats.com

Click 'Sanitary Fittings/Valves'.

Once you're on that page you will find 'End Cap Window (aka Clear end cap)' just below where they show all their end caps. 2" glass sight glass caps for $9.00 each.

You can cut your own, but $9.00 isn't that bad.
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Re: Glass for sightglass

Postby condensificator » Tue Feb 15, 2011 3:27 pm

NineInchNails wrote:Check out http://www.stpats.com

Click 'Sanitary Fittings/Valves'.

Once you're on that page you will find 'End Cap Window (aka Clear end cap)' just below where they show all their end caps. 2" glass sight glass caps for $9.00 each.

You can cut your own, but $9.00 isn't that bad.

...would be AWESOME if they were glass....but, nope. they are plastic. i wasted the $9.00 so hopefully no one else will have to.

i dig the hole saw route. here's my solution: http://homedistiller.org/forum/viewtopic.php?f=2&t=19973

some one else had p0sted this link a while back for lenses (flashlight replacements) http://www.dealextreme.com/c/flashlight ... ass%20lens

my fav way is with the convex "watch glasses" that i found....see the bottom of this page: http://homedistiller.org/forum/viewtopic.php?f=17&t=18624 i know that KS found a way to use the watch glasses with the std union type set up.
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Re: Glass for sightglass

Postby NineInchNails » Tue Feb 15, 2011 3:55 pm

Image Sorry guys, I did not realize they were plastic.

I just now noticed that the page says "Max temperature 150° F".
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Re: Glass for sightglass

Postby moonshiner dave » Tue Feb 15, 2011 4:52 pm

I bought mine from Dealextreme. It takes a while to get the stuff though. Took about 2 weeks to get mine.
http://www.dealextreme.com/c/flashlight-diy-parts-tools-917?search=glass%20lens
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Re: Glass for sightglass

Postby NcHooch » Wed Jul 20, 2011 4:57 pm

I have some of these on order:
http://www.aircomparts-air-compressors.com/p0021/
... with any luck, I can fabricate the port with 1-1/4" type L copper tube, and then press the sightglass assembly into the port. Done.

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Re: Glass for sightglass

Postby Kentucky shinner » Wed Jul 20, 2011 8:01 pm

I have the glass pre-cut for sale on my website.
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Re: Glass for sightglass

Postby mash rookie » Wed Jul 20, 2011 8:08 pm

Check with Kentucky Shinner at Hillbillystills.com He may have what you need.

I made mine from simple single strength window glass. The local hardware store gave me a small piece to work with. I cut them as close to a circle as I could with a glass cutter then ground them round. I have a diamond grinder so it was real easy and fast. Any place that does stained glass windows could do them for you.

A tile and marble store will have inexpensive diamond cutting blades or grinding discs that will work. It doesnt have to be a hole saw. Cutting blades for a 4” mini grinder have enough edge that you can grind the edge of flat glass. Just keep it wet. You could probably use a bench grinder for that thin of glass if you could wet grind with enough water.

MR

EDIT: KS beat me to the punch
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Re: Glass for sightglass

Postby NcHooch » Tue Jul 26, 2011 6:59 pm

Kentucky shinner wrote:I have the glass pre-cut for sale on my website.


I have a set of diamond hole saws, thanks KS.
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Re: Glass for sightglass

Postby DanielBoon » Tue Feb 05, 2019 12:05 pm

Thanks everyone for all your helpful suggestions.
What an awesome group of people.
Since making my original post I realized there are several types of sight glasses, including those tubular ones that surround some plates (i.e. Stilldragon's "crystal dragon" series.
I found out mine is called a union sight glass – that is, the kind that goes into a union tee on a column. It's a flat plate of glass that allows you to view inside the column to see sieve plate/bubble cap action.
The glass is sandwiched between the column and a steel ring that screws down, holding the glass tightly between two silicone o-rings.
So essentially a flat, round piece of tempered glass 4.25" (108mm) in diameter, 0.5" (12mm) thick is what I need.
Trouble ahead, trouble behind. Casey Jones you better watch your speed.
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Re: Glass for sightglass

Postby Yummyrum » Wed Feb 06, 2019 12:05 am

mash rookie wrote:I made mine from simple single strength window glass. The local hardware store gave me a small piece to work with. I cut them as close to a circle as I could with a glass cutter then ground them round. I have a diamond grinder so it was real easy and fast. Any place that does stained glass windows could do them for you.

A tile and marble store will have inexpensive diamond cutting blades or grinding discs that will work. It doesnt have to be a hole saw. Cutting blades for a 4” mini grinder have enough edge that you can grind the edge of flat glass. Just keep it wet. You could probably use a bench grinder for that thin of glass if you could wet grind with enough water.

MR


I made mine from plain old 4mm window glass using similar technique to Mash rookie . Same as Olddog .

I always fretted they might bust ,....not being borosilicate ,....but after over four years not a problem . My old 3mm window glass sight glasses in my VM/LM head are also still going after nearly 6 years .

I actually bought some Borosilicate ones from a supplier and they cracked :crazy:

Here's how I made mine
Yummy's Flute build
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Re: Glass for sightglass

Postby Saltbush Bill » Wed Feb 06, 2019 12:50 am

Considering the work involved in making glasses, I doubt many make them these days. They are readily available from most of the better still part suppliers. I bought and fitted mine over 7 years ago now and have never had a problem with any of them.
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Re: Glass for sightglass

Postby Yummyrum » Wed Feb 06, 2019 2:24 am

Saltbush Bill wrote:Considering the work involved in making glasses, I doubt many make them these days. They are readily available from most of the better still part suppliers.


Totally agree Salty . Standard sizes to fit 2, 3, 4" ferrules are cheap and easy to get hold of :thumbup:.....and I would in hindsight recommend this approach :think:

Me being the awkward bastard I am decided to make some fancy arse non-standard sized sight glasses and had to make my own :roll:
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Re: Glass for sightglass

Postby Saltbush Bill » Wed Feb 06, 2019 2:32 am

Yummyrum wrote:and had to make my own :roll:
And a nice job you did of them too :thumbup: I think that the ones that I bought and used were some of the first of the commercially available ones made specifically for use on Flutes/Bubblers , If it hadn't been for those I would have been making my own too :wtf: ...glad I didn't have to.
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Re: Glass for sightglass

Postby Hoosier Shine9 » Fri Feb 08, 2019 3:21 pm

I got mine from StillDragon,
I also up graded to the blue sight glass kits too.
I was using tri clamps before the upgrade. kept cracking glasses..... :oops:

https://homedistiller.org/forum/download/file.php?id=55468&mode=view
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Re: Glass for sightglass

Postby Oldvine Zin » Sun Feb 10, 2019 12:00 am

McMaster Carr is a great source - that's where I got mine


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