#Help Spot Design Flaws

1 messages · Page 1 of 1 (latest)

low valley
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Trying to design a shelving unit for my desks, just finished up the design of the add-ons in Shapr3D but I need some help from more experienced woodworkers on if there are things I looked over. For reference the modelled board size is 1-inch thick

shy crypt
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1" of what type material?

low valley
shy crypt
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Screw n glue or somethin else?

low valley
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yeah

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hm

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maybe i should look into plywood as well

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but i need that smooth white finish

shy crypt
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Just asking cuz particle board doesn't like screws in the "endgrain." You could drill for shelf support pegs where you need it...

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Also this corner

low valley
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Yeah im trying to think about what to do with that

shy crypt
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You could box it in underneath and call it a "feature" haha

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Figure out your fastening method, and resolve the support for that corner and you look good to go. I like the design!

shy crypt
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Glad i didn't bother drawing that on mobile haha exactly what I was gonna suggest for the corner

steel token
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All of that is particle board?

low valley
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Like all this is PB

shy crypt
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Cabinets is one thing, floating shelves are another. If you made a backer out of something thin and nailed it a bunch, I think you'd prevent a lot of rocking putting strain on your fasteners

steel token
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The issue comes to horizontal load, notice how there are no horizontal spans in your photo

low valley
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But i mean like

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My desks are fine and theyre made out of a composite board

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With no spans

steel token
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Not using PB would probably be my suggestion

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Or support it very regularly

low valley
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What material would you suggest?

smoky briar
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Plywood

low valley
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How pricey do you think inch thick plywood would be?

steel token
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Well that would be overkill of the highest order

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3/4 if it’s bearing substantial loads or needs to be very rigid

low valley
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Hm, alright, ill adjust measurements to compensate for that then

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ill go to a hardware store later this week and see what material i could work with

pure dove
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If your boss allows, ask if you can order Melamine as an add-on to his regular orders from the supplier.

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Using Melamine boards from Home Depot, I just finished building alcove units for my sister on both sides of the fireplace.

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For the top on the cabinets, I doubled up the 5/8” Melamine boards for extra strength when someone decides to stand on it to reach the upper shelves.

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Previously, it was empty space.

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I used The Sagulator and realized a 54” span might sag a wee bit over time. Even with hardwood edging.

low valley
pure dove
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You can build your desk with Knockdown Fasteners — IKEA style.

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Those fasteners help to make rigid connections in Melamine boards.

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Also, try to use coarse threaded screws in particle board type of materials. Confirmat is one brand name.

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PVA glue won’t work on those slick surfaces. Get Titebond Melamine Glue if you are doing glueup.