Strong Enough Hinge? - Router Forums
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post #1 of 15 (permalink) Old 06-27-2015, 10:05 PM Thread Starter
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Default Strong Enough Hinge?

Finishing up a Jersy Display Case and have concerns about the weight of a 36 x 34 pane glass. I have a 30 inch Piano (Continuos) hinge and wondering if I need to beef up the hinge/frame/latch before the glass goes in.

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post #2 of 15 (permalink) Old 06-27-2015, 10:15 PM
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Quote:
Originally Posted by Marco View Post
Finishing up a Jersy Display Case and have concerns about the weight of a 36 x 34 pane glass. I have a 30 inch Piano (Continuos) hinge and wondering if I need to beef up the hinge/frame/latch before the glass goes in.
I would think so, but how heavy is the glass panel? I think I would maybe use longer screws than normal tho, at least on the top half of the hinge. Be sure to post a picture of it. You do such nice work.
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post #3 of 15 (permalink) Old 06-28-2015, 01:21 AM
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They will hold up quite a bit of weight. I had a fold out section in a pantry that was 10-12 inches deep, 5' tall, and got loaded up with jars and canned goods and it was never a problem. Like Herb suggested, it wouldn't hurt to use the longest screw you can.

Someone I consider a master woodworker once told me that a master woodworker is not someone who never makes mistakes. He is someone who is able to cover them up so that no one can tell.
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post #4 of 15 (permalink) Old 06-28-2015, 09:39 AM Thread Starter
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Thanks, Herb and Charles. I'll use the longer screws and post a pic when completed. I had/have a fear of a big disaster coming and wanted/want to avoid a bigger crash.

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post #5 of 15 (permalink) Old 06-28-2015, 09:58 AM
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I have a piano hinge on my boat holding a 6' x 2' teak door...hinge is about 5 1/2 ft long with a screw every 3 inches. Screws are about 3/4" long...

Also using a piano hinge on a closet door holding an oak "jewelry box" about 30" X 48" filled with jewelry...holding the door and box. The box also uses a piano hinge to hold its door which also has jewelry hanging on it...

Piano hinges are incredibly strong...right length screws are a big advantage...

You are right to consider the framing as it needs to be as secure as you can possibly make it...it should not become the "weakest link"...
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post #6 of 15 (permalink) Old 06-28-2015, 11:02 AM
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How thick is the glass?

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post #7 of 15 (permalink) Old 06-28-2015, 04:26 PM
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The piano hinge will be fine especially with the longer screws. The frame will become the weak point so try to beef it up if possible.
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post #8 of 15 (permalink) Old 06-29-2015, 02:41 PM Thread Starter
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Default The long story...

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How thick is the glass?
I wasn't ignoring your question Ralph but had not bought it yet...

.. and now the long story. I didn't have plans for the Jersey Display case. I had the dimensions 36"high x 34"wide and envisioned plexiglass to cover the opening. After starting the project the smallest piece of plexi I could get locally cost $66 plus tax. Now the deal I had with the client was cost of material plus x amount for me for the Display Case. That was not a well thought out deal as I could wind up with extra material that I may never use and on the flip side material bought that I used very little of to complete the build. Both parties need to feel that they got a fair deal.

For cost reasons I reluctantly chose glass $35. Today I got lucky and found the same piece of plexi for $46 locally. So I am going to use the plexiglass rather than the pane glass. Even with the longer screws on the hinge I would have worried. I was even looking at some decorative corner for extra support on the corners.

I do appreciate all of the advice and opinions given. Hopefully this week I will have a completed pic to post.
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post #9 of 15 (permalink) Old 06-29-2015, 03:27 PM
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Glass will resist scratches better than plexiglass.
Glass can be single strength, double or even thicker.
Single is typically used for picture frames.
Double for single pane windows. Double frame (insulated) windows are typically two single strength sheets enclosed with a space (often filled with inert gas) in between.

Double due to size would be appropriate for 36" x 34". However, it is possible to order the pane as single strength tempered glass. Of course the expense can be quite high. You might find something that size in tempered at recyclers. But even single strength would suffice as likely the display is for viewing and not touching, tapping or bumping into.

Myself, I used to have a work table composed of a single strenght pane of tempered that came from a sliding glass door. It easily doubled as a light table. Once while I was moving said piece of glass, the tip of the corner brushed the concrete floor and instantly I was holding a rectangular shaped collection of pieces. Then just as instantly, all the pieces fell to my feet. Quite dramatic!!

And of course, glass can be etched....
https://www.flickr.com/photos/rwl753...57645964482450

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post #10 of 15 (permalink) Old 06-29-2015, 03:37 PM
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Then just as instantly, all the pieces fell to my feet. Quite dramatic!!

And of course, glass can be etched....
https://www.flickr.com/photos/rwl753...57645964482450[/QUOTE]

WOW, I would have liked to seen that,Ralph.
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