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About Me

Name: Marko Cosic
Location: Cambridge
Contact: 07774 524 114 or


Fuel burned to provide energy for domestic water heating accounts for over 5% of total UK CO2 emissions. Most of this water is used for personal washing and the amount of energy used is increasing as consumers wash more often, demand more luxurious showers, and increasingly utilise the bathroom for pleasure/leisure.

Novel packages of existing techniques and technologies can yield 50-80% energy savings with better shower performance, saving 1-2% of UK CO2e emissions at 50% market penetration. We’re working to make them both practical and affordable at individual dwelling scale. They enable a bunch of smart features to modify behaviour and transform the user experience too. Thou shalt covet these and will save the world by indulging yourself.

We were seed funded in June 2013 by the Climate-KIC at Imperial College and are actively looking for an exceedingly good industrial designer to join the team. Does being to showers as James Dyson is to vacuums tickle your fancy? Know somebody for whom it might? please!

Previous employment at


Energy, transport, agriculture and medicine - big ticket items rather than frivolities - tickle my interest most. I’m more excited by hardware than software and governance, though the latter two probably have the highest bang per buck these days!


Energy and water efficient bathrooms @ Cambridge Heat Transfer Ltd

Personal projects:]

Things I can help you with

Mechanical and systems engineering. Fabrication in metal and composites. Product design. Experimental equipment design. CAD/CAM. Most things car related.

Tools I can help you with

I'm a professional hacker so have lots of tools that you're welcome to borrow if you convince me you won't break them or break yourself using them:

Lots of tools.


I've left a few of the tools on extended loan at Makespace (those that are either indestructible or too specialist for the tool-wrecking amateurs to have a use for...)

Metal knock-out punches Very useful for making large round holes in cars and metal project boxes. 1.4 mm mild steel / 2.5 mm alloy is about its limit; use common sense and plenty of lube!

C-frame press Where you need to take the press to the job rather than the job to the press.

Hydraulic crimper Can be used for wire rope too.

Leather/gasket punches Don't use on anything more resilient than leather please.

Hook-spanner/C-spanner set As used for water pumps/viscous fans for bearing retainer nuts. Where you'd normally knock "that stupid castle shaped nut" around with a chisel or metal punch these are the tools you're meant to use.

Safety lockwire kit These were expensive, so watch lockwiring videos online before using these and dont use them for anything else please. Chuck a few coins in the case (not Makespace box) to replace the wire/let me know if the spools are nearly empty so that I can reorder. Silently using up the last piece won't win you friends. ;-) Replacement wire

Helicoil kits in UNC Helicoil kits in Metric M5 to M12 and 1/4"-20 to 1/2"-13. Chuck a few coins in the case (not Makespace box) to replace the inserts (20-40p each depending on size) and let me know if any are nearly empty so that I can reorder. If you break a tap buy a new one off eBay etc and replace please. Silently using up the last piece/breaking the tap won't win you friends. ;-)


These tools are at the workshop/at home. Give me a shout if you'd like to borrow them.

Hand Tools

  • Punches, chisels, drifts metal letter/number stamps.
  • Needle files, various hacksaws, LH and RH aviation snips
  • Heavy duty staple gun & staples
  • Marson hand riveter, & rivets
  • Cleco pliers, cleco rivets in 3/32", 1/8", 5/32" and 3/16", cleco clamps
  • Impact screwdriver
  • Machinists squares (3 to 12")
  • Feeler gauges (straight and cranked)
  • "T" bore gauges 1/2" to 6")
  • Magnetic wigglers (centre finders)
  • Transfer punches (imperial)
  • Digital dial gauge (25mm) and magnetic base
  • M&W Micrometer (25mm)
  • Mitutoyo 200 mm digital vernier calipers
  • Normal screwdrivers (expect Pozi - stolen by dad)
  • Micro screwdrivers
  • Security bit screwdrivers
  • Torx, heax, and nut driver screwdrivers
  • Torque screwdriver
  • Ratchets, breaker bars, torque wrenches, extensions, sockets of most flavours (imperial and metric)
  • Spanners of most flavours (imperial and metric)
  • Allen keys (imperial and metric)
  • Torx drivers
  • Pliers of most flavours
  • Forceps of most flavours
  • Electronics tools (pliers, cutters, scissors, strippers etc)
  • Electronics assembly aids (all the panavise gear)
  • Ratchet crimpers
  • Scissors and knives of most flavours (incl Kevlar scissors)
  • Steel rules, measuring tapes, bolt and drill gauges
  • Drill bits (letter/number/imperial - no metric!)
  • Holesaws
  • Taps/dies
  • Insulin syringes for superglue/oil
  • G-clamps/F-clamps/Belt-Clamps
  • Mole grips/welding clamps
  • Scrapers, prybars, wire brushes (dirty tools)
  • Wood saw, foam saw
  • Rafters square, 1800 mm feather edge, 600 and 1200 mm spirit levels
  • 600 mm straight egde for wallpapering
  • 12" drywall knife, plastering/bricklaying trowels, plasterer's hawk
  • Caulking guns, filling knives, paintbruhses, rollers
  • Box-o-household-wiring bits
  • Box-o-household-plumbing bits
  • Proper blowtorch with MAPP (F-ing hot) and Propane (general use) gas

Power tools

  • Fluke 179 multimeter
  • Chinese "Megger" insulation tester
  • Thermal wire strippers (great for PTFE/aerospace cable that's impossible to strip otherwise!)
  • Weller WD1 soldering station
  • Dremel engraver
  • Assembly line torque screwdriver (it was cheap; never used it; too good to sell etc)
  • Hot air gun
  • Cordless drill
  • Circular saw
  • 4.5" and 9" angle grinders w/metalworking and diamond discs
  • Car battery charger
  • 2.5HP air compressor & tyre inflator/blow gun/spray gun
  • SDS drill (can also borrow diamond core drills if notice is given)
  • Biscuit jointer
  • Laser level
  • Mains hammer drill (currently broken)

Odd Tools

  • Mechanics stethoscope
  • 3-prong, metal band, and chain noose oil-filter wrenches
  • Locking wheelnut removers
  • Oxygen sensor and spark plug sockets
  • Oxygen sensor and spark plug thread chasers
  • Metric and imperial flare nut spanners (5/6ths of a ring spanner; much better for removing brake pipes than an open ended spanner)
  • Motorcycle chain splitter
  • Pipe cutters (plumbing size and automotive brake/fuel size)
  • Bore hones
  • Clutch alignment tool
  • Aircon/fuel line "quick release" tool
  • Easi-outs

Household Tools

  • Pressure Washer w/patio/wall attachment
  • Hedge trimmer (mains electric)
  • Strimmer (mains electric)
  • Lawnmower (battery electric)
  • Hose reels
  • Shovel, spade, fork, rake, shears, brooms
  • Sledgehammer, crowbars, stanley fubar
  • Carpet kicker/carpet fitting tool


Sewing Machine Ultra basic Singer "Serenade" from LIDL. Looks a little like this one at Argos. I won't leave this in Makespace because I know what happens to "domestic" machines in schools and workplaces (short unhappy lives and never available working when you need them) but I'm happy to let people borrow it on a you-break-it-you-bought-it basis. (£80 new)

Thule 3-bike rack Towball mount; 13 pin electrics.

Trailer I've got a small trailer that lives in Cambridge CB4 and I'm happy for any makespace members to borrow it as/when required.

The bed is 1750 mm long and 960 mm wide; 760 mm between the wheelboxes. Max 550 kg gross but the chassis is heavy so only ~250 kg legal payload. All the lights work (has 7-pin and 13-pin plugs) and it has the breakaway cable/jockey wheel too:

trailer pic

Useful for appliances, sofas and whatnot. The bed is only 6 mm ply, so please don't throw rubble into it (laying bricks/slabs in is fine) and if you carry something like a piano that is heavy and on castors please chock it up with wood to avoid damage. The sides are made of cheese too, so try not to rest heavy things on them whilst loading or pull them inwards with ratchet straps. You break it you fix it; it gets nicked whilst you're using it you buy another one etc. (please take the padlock with you when borrowing it!)

It is legal to use the number plate from the back of your car o the trailer whilst you're towing, leaving none on the car. £7 buys a plate from eBay without the ID and V5 hassle you'll get at Halfords. If you wanted to leave my plate on there that's fine by me and though strictly speaking naughty I've never heard of people being hassled for having the wrong plate/marker pen plate on a tip-run trailer provided all the lights etc work: you'll hardly be setting any speed records!

550 kg is light enough to be legal behind pretty much anything. Check the your car though (some are 500 kg max) and if you passed your test after 1997 make sure that the car you're towing with has a maximum gross weight under 2,950kg so that you're under 3,500kg gross train weight. (no Land-Rovers...)