The screwhead
One drill bit
2nd drill bit. I could not get it into focus. I don't have any way to take small close ups.
Does this help at all?
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Whitewater Woman's Equipment Maintenance and Repair
- Thread starter WhitewaterWoman
- Start date
The screwhead
One drill bit
2nd drill bit. I could not get it into focus. I don't have any way to take small close ups.
Does this help at all?
the bit looks too small
they would probably be able to drive them even if they are too small, but the bit in one picture looks like it is rounded off, possibly from being too small
do you have different sizes available?
There should be markings on the bits, it should say for example "Z2". And the box the screws came in should also be marked with for example "Z2". So you want the same marking on the bit and screw, to be sure it fits well.
Your screws look like deck screws, it would probably be better to use a different type of screw for plywood on walls. A screw with threads covering all of it. If the screw spins in the wood and doesn't come out, try to gently jam a crowbar between the plywood and wall close to the screw. Then gently push the crowbar towards the wall at the same time as you use the drill on the screw, forcing the plywood outwards. This will help the screw move outwards, if it is just spinning and the thread doesn't grip the wood.
Your screws look like deck screws, it would probably be better to use a different type of screw for plywood on walls. A screw with threads covering all of it. If the screw spins in the wood and doesn't come out, try to gently jam a crowbar between the plywood and wall close to the screw. Then gently push the crowbar towards the wall at the same time as you use the drill on the screw, forcing the plywood outwards. This will help the screw move outwards, if it is just spinning and the thread doesn't grip the wood.
I wish I could help but I'm clueless about the screws and drivers. My first thought was the wood is wet and swollen around the screws but the screwdriver should be able to pull them out anyway.
See where the thread ends that blank space is the same thickness as the plywood so the threads are no longer in contact with the plywood. These screws were made for sightly thicker plywood. I would use needle nose pliers pull the head back a bit then unscrew, once the thread catches they will come out.
Thank you, Nitro.
OK. I go looking for different bits.
**********Later***************
I've looked in all the places tools might be and am not finding any bits. It seems to me that these are usually kept in a box, with all the different sizes laid out carefully. Maybe he took them. Or maybe they are hiding somewhere that doesn't make sense. I found a couple of other loose bits, but nothing that works.
I'll have to go to Home Depot and buy a set of bits. I'm going to try to drive to Ft. Launderdale tomorrow and probably there is a Home Depot on the way.
Forest Cat, there are no markings on any of the drill bits or parts. Just sometimes a brand name. Norwegians are clearly more organized than Americans. I will try the crow bar if I can't get a drill bit to work.
Ronald. That is a good idea. I screwed them in really tight and sometimes the screw went below the surface of the plywood.
OK. I go looking for different bits.
**********Later***************
I've looked in all the places tools might be and am not finding any bits. It seems to me that these are usually kept in a box, with all the different sizes laid out carefully. Maybe he took them. Or maybe they are hiding somewhere that doesn't make sense. I found a couple of other loose bits, but nothing that works.
I'll have to go to Home Depot and buy a set of bits. I'm going to try to drive to Ft. Launderdale tomorrow and probably there is a Home Depot on the way.
Forest Cat, there are no markings on any of the drill bits or parts. Just sometimes a brand name. Norwegians are clearly more organized than Americans. I will try the crow bar if I can't get a drill bit to work.
Ronald. That is a good idea. I screwed them in really tight and sometimes the screw went below the surface of the plywood.
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The tool slips in the screw head. So I will learn now to call those parts "driver bits." Thank you for helping me learning what all these things are called.
If a Torx driver slips in the screw head it is either too small or shot to hell and needs replaced.
I drove over eight pounds of Torx screws with a single driver and it is showing no signs of wear.
I was a little confused about the problem, but I see now that it's a problem with the bits. So the crowbar was just for problems with screws spinning in the wood and not coming out. Good luck with everything.
Bits, and/or screws can be worn out in one direction but not the other. Pushing harder can help keep them in. So can using a bit of fine grit. Valve grinding compound is ideal, but crushed sand in any grease is good. For the hardest push, throw your weight at the tool and then trigger it it as you push back. The screws may have stuck to the wood, depending on resin, humidity, etc.
I once had to drive 3,500 #3 square-drive machine screws with limited access, forcing the driver about 10 degrees off straight. With a small grinder, I made a standard Cluthe bit into a ball-end version to take the angle, but then it could not cam-out at all. I expected it to break regularly at the undercut. It never broke, but by the time the job was done, the shaft was twisted 30 degrees. Robertson Rules!
I once had to drive 3,500 #3 square-drive machine screws with limited access, forcing the driver about 10 degrees off straight. With a small grinder, I made a standard Cluthe bit into a ball-end version to take the angle, but then it could not cam-out at all. I expected it to break regularly at the undercut. It never broke, but by the time the job was done, the shaft was twisted 30 degrees. Robertson Rules!
If the old bit has also chewed out the heads of the screws no bit will be able to turn them. An old back yard butcher's trick is to use an angle grinder with a microblade disk to cut a straight slot in the head of each screw and then try a flat bladed screwdriver to try and undo them.
This will dramatically weaken the screw heads, especially if you cut too deep, and the screw heads will snap off if you're not careful. Screw heads snapping off is the next step anyway if you can't undo them. With the screw heads snapped off you should be able to use a jimmy bar to prise the boards off of the screw shafts.
Once the boards are removed there should be enough of the screw shaft left protruding that you can lock vice grips on to them and undo them that way.
This will dramatically weaken the screw heads, especially if you cut too deep, and the screw heads will snap off if you're not careful. Screw heads snapping off is the next step anyway if you can't undo them. With the screw heads snapped off you should be able to use a jimmy bar to prise the boards off of the screw shafts.
Once the boards are removed there should be enough of the screw shaft left protruding that you can lock vice grips on to them and undo them that way.
Yes, that was what I was talking about, those markings/numbers. But on some they are stamped into the metal and can be difficult to see. Or they are worn off. So maybe that's why WhitewaterWoman's didn't have any markings.
A crow bar is 6 feet long, straight, and used for digging in the ground smashing rocks and concrete.Is that Australian for "crowbar"?
A Jimmy Bar is only about 2 feet long and looks like this:
That's a digging bar.
That's a crowbar.
I need an Australian-to-English dictionary. 
Sorry to disappoint but you've got it back to front. There's a wide variety of those different types of tools and they all have quite specific names.That's a digging bar.
That's a crowbar.
A crow bar is as I described. Bars with a bend in them are collectively called Pry Bars and different sizes have different uses and different names, right down to the little Tommy Bar that is only a few inches long. And these aren't Aussie terms, they're English.
That's interesting and a little confusing.
I'll just call it brekkjern, that's what it's called here. New Threads
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