Same Cabinet, Different ?

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11 years 6 months ago - 11 years 6 months ago #8745 by Ron Roberts
Ron Roberts created the topic: Same Cabinet, Different ?
This cabinet I'm building (which has to be in place by this Saturday, not finished, just hung) is necessary to help support a microwave oven. The old one sat on a wall mounted microwave shelf, made by Broan for that purpose. I mounted this thing with masonry studs set into the double brick wall and through bolted on top to some 2x4 framing fastened to the joists. (Yes, I was worried it might fall).

The new microwave will also attach to the same wall but needs an upper cabinet bottom for the top of the microwave to be screwed to. The installers will take care of all that this time. All I have to provide is the cabinet bottom (and an electrical outlet inside the cabinet and extend the duct down about 14\", no problem there).

My question is this: The cabinet bottom is glued and screwed to the sides. I was planning to also add angle brackets to the inside bottom corners and also to the back using two of the aforementioned left over wall studs. Overkill again or good precaution? Am I over estimating the weight of this microwave?
Last Edit: 11 years 6 months ago by Ron Roberts.

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11 years 6 months ago #8747 by DPF
DPF replied the topic: Re:Same Cabinet, Different ?
I would suspect you are overestimating the weight of this microwave. Microwaves are exceedingly light nowadays.

If it's a smallish one they weigh next to nothing. A larger one, maybe with circulating fans and whatnot will weigh more, but they aren't going to be the pig-iron beasts of yore.

I'd get some specs for the model you intend to get (if you don't already have it), then approximate that with some ballast just in your arms to get an idea of the real weight.

-RGC

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11 years 6 months ago #8749 by Ron Roberts
Ron Roberts replied the topic: Re:Same Cabinet, Different ?
You're probably right, DPF. With my penchant for overbuilding things I am increasingly beginning to question the extent I'm wanting to go the older I get! :)

The new oven is a GE Profile and, like the previous shelf/oven combination the bulk of the weight will be supported by the wall. The three wafer head self tapping sheet metal screws that go through the cabinet bottom and into the top of the MW serve to assist the wall mounting provisions. The unit has an integrated hood/exhaust fan and weighs a net 64 lbs.

How is a commercially produced upper cabinet have it's bottom attached?

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11 years 6 months ago #8754 by AZ IRONWOOD
AZ IRONWOOD replied the topic: Re:Same Cabinet, Different ?
Ron, the method of cabinet bottom attachments are as varied as the # of builders. The top quality cabinets probably utilize [for strength] stopped dadoes or better yet, multiple dowels, since they can be recessed just shy of protruding through the thickness of the cabinet wall. This assumes the cabinet has portions which are visable whereby you don't want metal fasteners showing. Otherwise I'd lean towards using modern metal fasteners, like drywall or deck screws. In my opinion, it's not the weight of the microwave that's of major concern, but how much does the Thanksgiving or Christmas turkey or ham weigh!!! Picture the oven with the almost cooked chow, meeting the floor if it's not fastened well enough. Go for the overkill.

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11 years 6 months ago #8757 by Ron Roberts
Ron Roberts replied the topic: Re:Same Cabinet, Different ?
I hadn't even thought about the weight of what's being cooked AzI. My wife will never cook a turkey in one but that doesn't mean we wouldn't use it for something else heavy.

I thought about dowels and settled on deck screws. I realize that with any kind of angle bracket affair I'd have exposed fasteners. But inside this particular cabinet that would be ok. About a 1/4 or more of the usable space will be taken up with the duct which is 3 1/4\" x 10\".

I'll see what the intallers have to say in the morning. I have my overkill ready and handy.

Thanks.

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