Red tub vacuum, usually lives in the workshop area.
Good suction,easy to empty and clean, useful for clearing general workshop waste (e.g. saw dust and chippings). Has a particularly long cable on a built-in reel, so is the best choice for a quick once-'round-the-workshop clean up.
Henry looks plump, but actually doesn't have a very large tummy. As a result he often gets painfully full, gets overheated and stops doing his job properly. Don't let him suffer in this state - empty him into a bin in the dusty area.
Blue tub vacuum, usually lives somewhere near the dusty area.
Large capacity and good suction, but this drops off when the tub becomes over full. Not quite as easy as Henry to clean out - there is a filter sock over a frame which needs to be fitted carefully to prevent dust passing straight through the motor.
Another tub, this one dedicated (at present) to the bench-top bandsaw.
Hoover Shop Vac
Greeney-Grey in colour this is an antique, but still works well and has the advantage of accommodating larger hoses, such as will fit on the router table. It uses a cylindrical cartridge filter than needs accumulated sawdust clearing out when the bin is emptied - messy, but shows how much dust it is keeping out of the air.
Purple beast lives in the blue room as that is where there is the most carpet needing cleaning.
Nilfisk workshop vacuum for use in the dusty area with sanding tools. It has a power socket which these can be plugged into, and the vacuum then switches on whenever the tool is running. Needs a set of adaptors for the various sanders buying / fabricating.
Henry the Second
Donated, more recent model with high/low power switching. This one uses a bag, and seems to be less powerful than the original Henry. Lives under the metalworking bench.
Small cylinder-type bagless vacuums of varying quality are attached to some tools. These all need to be checked regularly to make sure they don't become too full.
Emptying and cleaning instructions
In all cases, it is a good idea to have a mostly-empty dustbin with liner ready to receive the waste.
Release the clips holding the motor to the top of the canister and put to one side. Lift next layer with the stocking-filter up from the canister, shaking / brushing dust from this into the canister, then put this part aside. Empty the canister contents into a dustbin.
Before re-assembling, check that the stocking filter is held in place with an elastic band holding the top securely over the Velcro (it can come loose if brushed clean too enthusiastically).
Replace the filter layer back over the canister, with the scourer filter over the central hole, then put the motor top back - align it so that the switch is to the rear away from the hose port. Re-secure the clips.
Dyson (table saw)
Release clips holding the motor top onto the canister. Take this to a dustbin and hold well down inside the bin and use a handbrush to clean the filter by gently stroking the brush along the corrugations. Don't be over-energetic, and try and keep the operation within the bin - otherwise it can be very messy.
When the filter has been cleaned, tip the contents of the canister into the bin and replace the motor / filter on top of the canister. Re-secure with the clips making sure that the switch is to the rear away from the hose inlet.