The OP is a joiner, and in general there is a minimum tool kit you need to carry which is something like cordless drill, cordless impact driver, bit set, spare battery, pry bar, saw, combi square, level(s), chisels, hammer, punches, nippers, block plane, screws, ironmongery, etc. That lot, and a travel mug and the almost obligatory mobile phone charger will just fit in a Stanley Fatmax back pack. It will also fit in a Makita LXT400 bag as well with a bit of space (albeit with all the tools sloshing around at the bottom), but either of these solutions leaves you picking out loads of stuff to get to the tool you actually need, which alway seen to sink to the bottom. And some tools, like hand saws and levels (and BTW joiners don't often use 3ft levels - too long for most standard door heads, too short for a door jamb), don't fit well in any sort of bag (my solution is to have a Bahco Ergo handle and separate blade which are short enough to fit in many more bags and boxes). That's why for smaller tools a Stanley/deWalt style tote with lods of pockets to organise your tools for ready access is better - but they aren't really big enough to carry a drill and driver in the tote, something you can do with the XL size Veto Pro Pac. Also worth understanding that many guys additionally wear either "cargo pants" with extra pockets and/or a tool belt.
I think the problems come when you start to add additional tools to do different tasks, as required, which could mean a cordless circular saw, 6ft level, laser level, cordless planer, cordless jig saw, folding hop up, door stop, etc.
Jack plane? Haven't seen anyone else use one on site for more than a decade. Too slow
Just locking out today (3-point espagnolette locks, adjustable keeps, Euro barrels, handle sets, escutcheons, spy glasses, letter boxes, closers, intumescent strips, etc). Our doors are pre-routed with all the holes right (well, that's the theory)
- I finished my apprenticeship in '91, then moved into printing, instead, so just a tad out of date)
