Hourglass Lampworking - Glass Blowing Techniques

[@MattJasa]

Use extra caution when working with Frit, you don't want to inhale glass dust! Also for 'Sealing Vessels' the best and safest method I recommend is to use a clear epoxy or glue. Avoid reheating sealed vessels as they could explode.

[@cathyerley3057]

Ha ha, just two days ago I was trying to work out in my head how I'd go about making an hour glass. Hadn't thought of making a bridge to stabilize while condensing the throat - brilliant!

[@MattJasa]

Thank you! It does take a lot of time condensing it down instead of tooling. But it does get extra thick and slightly magnifies the falling sand.

[@samhg3658]

Uou I'm so glad I searched it and came across your video, it's really fun to hear you talk

[@MattJasa]

Glad you enjoyed Sam, and thanks for watching!

[@iyoutome]

thanks for your patience and passion... ❤🙏

[@shamardaniel4819]

UNDERVIEWED! Your content is a huge help and your very descriptive and informative! Thx you

[@MattJasa]

Thank you Daniel! Its great to hear positive feedback. May I recommend the Galileo Thermometer episode? It's another glass device of measurement like the sand timer.

[@skymoore3177]

Too cool 🔥 👍🏽

[@h7opolo]

awesome

[@Y_I_DIY]

This is fascinating!

[@MattJasa]

Thank you! I've been planning to do some more and change up the design.

[@MeltyGlassworx]

That’s cool

[@oleksandramarchenko8132]

thank you! my 5 yo really wanted to know how hourglasses are made:)

[@MattJasa]

Your welcome, glad you enjoyed the show!

[@no-Just_Ice]

When you seal up the vessel are you bringing it up to temp in the kiln first or just going in cold because of the frit?

[@MattJasa]

Sorry if I didn't explain the process well, it is a bit confusing. I'm going in cold not for the Frit but the air inside the vessel. The air expands as its heated causing it to escape the vessel. So preheating and sealing the vessel will give me a Net-Loss of air. When it cools and contracts to its original volume there will be less air inside causing negative pressure.

[@magispitt]

How long did it take for you to make this hourglass?

[@MattJasa]

Hello magispitt, I would say about an hour.

[@magispitt]

@@MattJasa Thanks!

[@sorasarielcl]

Do you use store bought glass or home made glass like using quartz sand to make it? Which type of glass would you think works best?

[@MattJasa]

I mostly work with Borosilicate and have it shipped from an online store. The sand is glass Frit color triple passion from glass alchemy, that's where it gets its deep orange.

[@johnnyu.9823]

Just wonderinng. Is closing the hole, after you put in the sand in, by adding glass any different or easier?

[@MattJasa]

Great question! If you add glass to seal it before you heat the air inside then it won't change in pressure as it cools. It might gain a slightly negative pressure as the 'added glass' cools and contracts. The best method to avoid the problem is just to seal it with some glue or clear epoxy, that's probably what I would do If i were to sell these.

[@tylersingleton7992]

I want one for an hour

[@MattJasa]

I'll be working on a new version this year.

[@davidsouthwood5106]

What's the point of s8 hour glass

[@MattJasa]

It was used to measure small lengths of time like a stopwatch, while the days' time was kept using sun dials.

[@GrandmaLoves2Scuba]

Hey Matt, question. Is there a way you can make your Glass Science sign fumed on the inside? Don't get me wrong, I think the metallic look we see is very cool, but the different color changes that come from the metals would be really beautiful. Just a wandering thought passing briefly through my brain. BTW, nice job on the ⏳.

[@MattJasa]

Thank you, glad you enjoyed it :D.The outside could be fumed, It might be difficult to fume the inside. Shaking around some metal heavy frit inside might give it a little fuming color.

[@siberwolf33]

Hourglass or half minute glass

[@MattJasa]

True it's not a full hour, but "Hour Glass" is the most recognizable name for the search engine. I'll make my next one run a full hour and then rename this one to "Sand Timer"

[@rakiahbaker5589]

⌛♥️⏳

[@MattJasa]

Thank you!

[@cathyerley3057]

Ha ha, just two days ago I was trying to work out in my head how I'd go about making an hour glass. Hadn't thought of making a bridge to stabilize while condensing the throat - brilliant!