Update: Drill bit broke inside one of the screw holes while pre-drilling after advice. Can it hold 55 lb with only 3 of 4 screws (middle screw not used...)?

Update: Drill bit broke inside one of the screw holes while pre-drilling after advice. Can it hold 55 lb with only 3 of 4 screws (middle screw not used...)?

Not sure if you actually did anything yet, but I work for a countertop and tile company. If you have a quartz countertop, you need to drill TOP DOWN. Also, are you sure you need a 1/2" bit? We typically drill a 1-3/8" hole with a Dia Diamond Wet/Dry bit for a faucet hole. If you need to use a 1/2" core bit for a filtration faucet, same, buy a Dia bit. Need to use a Milwaukee Angle Grinder to operate; you'll burn out a regular drill. Lastly, get a large sponge, wet it, and cut a hole in the sponge and place the drill bit through the hole as you drill. Start the bit at a slight angle to the edge of the cut-out and then shift the grinder to a 90 degree angle to the countertop to finish.

Typically, the dual mount sinks are 18g sheet metal. Yes, use a metal bit to go through the flange, but my guys are lazy and use the Dia bits. Hope this helps.

Ledger lok or head lok or power lag type screws give you the ease of a deck screw with the strength of a lag bolt.

For the second pic do you have an example on what you mean? The moulding is coming up short so they filled the gap with caulk.

There actually wasn't a predrill size in the instructions if doing it in drywall>stud. The ones for brick/concrete gave a predrill size that included wall plugs (8mm/0.314 inch drill bit)

Yes, he's saying just make the pilot holes a bit larger. Does your drill have a "max" above 15? My Ryobi goes to 15 and the next setting is to not slip the clutch, just have to hang on to avoid twisting your wrist.

Was the pre drill size from the mounting instructions?

As suggested I would pre drill deeper, drag the screw across a bar of soap before reinserting it. You might need a hand screwdriver for the last few turns.

Probably the bulk of the weight would be my fat ass to be honest. But thanks for the suggestion. I forgot about looking into a YouTuber like Mattias Wendel

Offset

Can I take the screws out and predrill a bit deeper in the same hole? I'd love a new drill, but saving for a new car rn - just got into a car crash a few weeks ago T.T

Unless you plan on putting huge amounts of weight and stress on the work bench, screws will be fine. I have a couple benches made with 2x4s and screws and they have held up fine for years. You could likely get a free plan from Anawhite.com or from some YouTuber. That way you leave the guess work and doubts behind. Good luck and remember to have fun!

Another vote for carriage bolts.

Did you drill as deep as the screw goes? My guess is not quite, since I've done the same thing.

Otherwise, get a manual screwdriver and finish those off, or use it as an excuse to get a better drill :)

Can I use the same holes?

Every serious diy'er knows dry wall screws are the way to go 🤣

Yeah, I pre-drilled into the stud, and my drill is on #15 setting (max)

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It will not hold well like that.

Remove the screws and pre drill with a drill bit slightly smaller than the screw. Try again.

Or manually screw it in the rest of the way

Edit: why was the drill able to sink the bottom screw but not the top? Is the battery dying?

Did you drill the holes into the stud, then screw into it?

Did you check your drill's clutch setting?

I saw this once before. A string hanging off door was tripping sensor make sure nothing interferes or it wil reverse

I know this is probably a dumb question but when I install them at a corner how do I keep them from running into each other

(not a journeyman) It depends on what you mean by a junction box. If it's just a box in the wall: avoid changing it. Run a new line. Just pull your copper and be done with it and add an outlet. An inspector probably won't notice, but you are going to get shouted at less if the box doesn't look like a hot mess. I also believe that your box has a rating on it, and you can't put more current in it than it's rated for, and that rating should be around 20 amps. If you want to do what I think you want to do, you will exceed my guess of the rating. If you are going to be pulling a ton of current then you should preferably avoid splices if you don't have to use them. Remember to turn off the main power before you open the box. Please don't cook yourself

Proooove it

And bananas give you radiation too but that doesn't mean we go directly touching radiation because we can have bananas