Drill cover

AlexR

Active member
About two years ago, sick of cleaning my ever mud-caked drill, I made a cover.
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The stitching is obviously less than aesthetic, but it had a nice hole for your hand and generally worked quite well. Surprisingly I never noticed any issue until I had to bolt a right-to-left traverse - the pocket for my hand is on the right, so using the drill in the cover with your left hand is practically impossible.

The cover is still on that drill down a cave where I won’t get to it until next August, good excuse to make a new one.

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And as an added bonus I can now see the battery charge, which annoyingly wasn’t possible with the last one.
Instead of taxing my mediocre sewing skills with putting in two pockets so the drill can easily be used right and left handed I went the lazy route: stretch fabric 😁 (quite a specialised one, I wouldn’t generally recommend stretch fabric for this).

A drill cover has got to be the easiest DIY project for any caver, if you have a drill and access to a sewing machine I’d really recommend it. Yes you could use an old dry bag, but it won’t last long.
The best material is something like a medium-weight upholstery fabric, something with a bit of texture so the drill isn’t too slippery. I think the fabric for the first cover was this one.
The exit for the drill bit can simply be a buttonhole stitch or alternatively some heavier duty fabric.
Instructions:
Place drill on fabric, trace with ca. 2cm seam allowance, cut fabric to size, sew on Velcro, make hole for drill bit & cord, sew halves together, turn right side out, done!
Remember you can always make it smaller afterwards, but if the drill doesn’t fit your options are limited ;)
I’d recommend putting the opening at the bottom so it’s easy to change the battery.

Two trips and you’ll have regained the time it took you to sew the cover by not having to clean the drill, and the spare fabric can be used for a drawstring-closure bag for keeping other kit in.
 
We made one out of Warmbac material years ago. The drill got a bit warm though. Now we use a large polypropaline sandbag cut to size with a toggle at the end to change the battery. The one advantage I guess is that its easily disposable so you dont need to wash it. Our chuck hole is taped. Either way is a good idea as I had to clean the drills.
 
You need to apply to the BBC's Great British Sewing Bee mate!

I made a few out of Warmbac suit hoods. You can snip a corner off for the chuck and bit to go through and they are pretty waterproof. Not as well sealed as your version of course, but handy to keep the majority of drips and dust off the drill.
 
@The Old Ruminator
I've used sandbags like that for digging, the disposable nature is quite nice and they do a surprisingly good job at keeping the drill clean.

@Pete K
You should see the camp slippers I knocked up the other other day, now that I've fixed my sewing machine I'm on a bit of a spree. I'm convinced the waterproofness doesn't really matter that much, almost any cover will keep spray like a waterfall off the drill, and if you submerge it almost no cover will save you from water ingress. The ones that do are pretty heavy & bulky, plus once they get holes in them you're back to a non-watertight one.
Conversely it's amazing what difference even a makeshift cover makes, from completely caked in mud to clean.
 
We always make our drill covers out of heavy duty trailer canvas.

Bosch cover

Is your drill not running hot when drilling longer holes? I' missing some ventilation holes in your cover.
 
I have a rather excellent cover made by someone called Josh. I did however find out the hard way that it's advisable to not just leave said drill otherwise uncleaned in the cover post-dig for ages in a cold garage. Arrived in Albania with it locked solid with what turned out to be the thinnest layer of rust. All it took was a clean of the rotor and stator with some contact cleaner and lube spray but that wasn't feasible without appropriate torx bits in the field...
 
We always make our drill covers out of heavy duty trailer canvas.

Bosch cover

Is your drill not running hot when drilling longer holes? I' missing some ventilation holes in your cover.
I currently primarily cave in alpine caves with a temperature of around 3°C, and (by number) mostly drill 6mm holes for climbing. For 6mm or 8mm it's not an issue at all, for capping (8.5mm, 15-20cm deep) I've not noticed any problems either.
The drill is brushless and generates less heat than a brushed model, but also the cover is reasonably breathable/ thin.

If I were capping in a more accessible UK location (or elsewhere) I would probably go less lightweight and more sturdy.

I used the drill with that very cover over the last 3 days, and it worked really well - both left and right handed.
 
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