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Strictly speaking, no, but you'll tear through the belts faster without and could potentially damage the machine , costing you more in deposit money. I did as many as I could before and still missed some, partly because I got lazy. It then ate in to the time I had to sand, from hammering them in because it was chucking out sparks every time I went over one, which didn't feel to safe with a massive bag of potentially explosive sawdust so close. If they're cast iron victorian ones it'll be a total pita, as they'll have rusted into place.
tl;dr yes, but if you value your time more than your deposit don't bother.
Wood floors. Rather than fork out for new boards we want to keep the original floorboards we found under the carpets. They're a bit wonky which we're OK with, however we will sand them down and treat them.
We've picked out all the tacks/staples etc but there are still some heavy duty nails with 1 or 2mm above the surface. Is this going to fuck the hired floor sander?
Am I really going to need to go inch by inch around 70 square meters of floor with a hammer and punch knocking them all in?