Questions tagged [glass]

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How to cut a thick glass block at home?

Due to pandemic, there are a lot of machine shops closed and delays in getting something custom made. I was wondering how to cut a triangular glass prism (~5cm hypotenuse) in the middle so I have two ...
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9 views

Would outside reinforcement increase thermal shock resistance of a glass cyllinder?

Would a glass cyllinder reinforced on the outside with tensioned glass fiber be more resistant to thermal shock than an unreinforced one? I understand that the failure happens when the glass starts to ...
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Mirror without glass?

I just noticed "mirror" was actually created by applying thin layer of metal on top of glass. In fact, the polished metal is exactly how mirror gets its properties - while glass itself is ...
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1answer
41 views

How much an unevenly heated glass plate bows?

In relation to this question about 3D printing, I wonder how much a 200 mm square glass plate heated only in a central 15 cm square region would bow upwards or downwards. According to the thermal ...
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Grinding Forces Problem - CNC on Zerodus

We, my colleague and me have follownig problem and now weIwanted to ask if you can provide us any help. It's the first time we are posting in this forum, so we are thankful for any ideas or input ...
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1answer
25 views

What does TIR stand for in Window Pane Fenestration?

When looking at glazings within various public databases I see the fields "tir" shown often. E.g as seen below: ...
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3answers
1k views

Why doesn't stovetop glass crack from thermal shock?

I have a feeling that if my stovetop was made out of regular glass, it would have cracked from rapid cooling/heating a long time ago – especially if you consider accidental water spills. What kind of ...
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3answers
102 views

Feasability of glass gears?

I recently saw a video where a glassblower was making something, and one of the first steps was to push the wad of molten glass down into a shaper with a number of vertical spikes, such that the ...
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0answers
54 views

Glass bottle with a prolonged neck that continues into the inner space

Is it possible to create following two shapes from glass using currently known glass mass production techniques? Shape #1: bottle with a prolonged neck that continues into the inner space, like this (...
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1answer
21 views

Database for stiffness matrix? [closed]

I have searched everywhere for the stiffness matrix of GFRP, but there isn't a single paper or site that experimented the full matrix. Is there any sort of database for the stiffness matrix of many ...
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1answer
67 views

Seperating two glass pieces with a circuit board inside

I want to repair an outdoor lamp (see images below) however I can't get the glass container open. The methods I found on the internet are based on glue removers or based on heat but I'm not sure this ...
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1answer
77 views

Laser beam welding

I would like to use a laser beam to weld small metal parts that are located within an air tight enclosure but want the laser head to be located outside the enclosure which would require the laser beam ...
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2answers
142 views

Tempered glass physics

I have two related questions Why is a thicker tempered glass stronger than thinner? For example, I have to hit much harder at 3/4” tempered glass panel surface than I hit 1/4” panel in order for ...
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2answers
142 views

Methods for cutting glass

I am trying to find the easiest way to cut a thick glass pattern (glass thickness of 1-3 mm thick) without breaking. I am considering laser cutting but I don't know if I can cut glass of this ...
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2answers
91 views

Need Help to Remove Sway from Steel Post + Glass Panels

I have spanned ~15' with 2x 10mm tempered glass panels. They're connected in the middle with a 1.5" x 1.5" 16-gauge, 316 stainless steel post filled with concrete. This post has a 316 base welded on ...
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1answer
27 views

Will the pressure inside a pressing mold will be constant if I'm working with a fluid inside?

I'm pressing glass and I want to know if the pressure that the walls of my mold feel is the same through all the internal surfaces. I'm willing to assume that glass will behave purely as a fluid (very ...
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1answer
60 views

Automatic tinting of a region of glass

I hope this is the right place to ask my question. I am conducting a feasibility study into whether or not it would be possible to tint a single region of a continuous piece of glass. Think of a ...
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2answers
50 views

Glass used in biometric machines

I would like to know what kind of glass is used in biometric attendance machines over which we press our thumb? Is there something special about these glasses or their manufacturing?
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2answers
63 views

Usticking two glass elements fused by vacuum

I have an interlocking set of parts (1 and 2) which are used under vacuum. The last time I used it, the interface was wet with a mixture of water and ethanol. When the vacuum was removed, the two ...
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1answer
1k views

Fracture patterns in tempered glass

While browsing a local news site, I stumbled upon this picture of a broken bus door. The glass was fractured due to a rock impact. As far as i know there are no heating elements on the window section ...
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1answer
280 views

How would I put a barcode of other scannable code on a coffee cup?

I am interested in mass producing a reusable coffee cup (à la KeepCup) with a scannable id on it. Cup will be plastic or glass, ideally glass. ID code will need to survive being washed regularly. ...
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1answer
243 views

Glue plastic to glass with chance for easy removal later

I have a 3d printed (ABS or PLA) case which houses small single board computer. I want to glue it to glass (car's windshield from the inside) so that it sticks nicely and does not vibrate. However, ...
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1answer
57 views

Problem finding temperature gain of air through heated glass tube

I have a 20 cm long glass tube of outer diameter 6.4 mm and inner diameter 4.3 mm. Air at ...
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0answers
373 views

Will drilling a hole in a pane of glass reduce it's structural integrity?

I've got a glass box that measures 900mm x 450mm x 450mm. The width of the glass is 6mm thick. If I drill, cut, or grind a small hole in/through one of the faces; will it significantly affect the ...
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1answer
129 views

Why does the Ultimaker 3D Printer has a Heater + Heater transfer plate (aluminium) + Glass?

Why does the Ultimaker 3D Printer has a Heater + Heater transfer plate (aluminium) + Glass? I wonder why a glass plate, and if is possible to remove the glass and print directly in the aluminium ...
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1answer
568 views

Glass Facade Load on edge of slab?

How do i calculate the load of a glass facade and is it placed uniformly on the edge of the slab or should i place a point load on each edge of the panel of the facade? And Can anyone give me a link ...