author
137CommentsSouth of LondonJoined November 5th, 2014
Love to tinker with automation, wireless, sensors, energy monitoring. Believe future in living will be in heavily insulated dwellings with smart use of monitoring and control. Life is never dull. Retired scientist/engineer, keen cyclist.

Tell us about yourself!

Complete Your Profile

Achievements

100+ Comments Earned a bronze medal
  • How to make a mini milling machine- manual or CNC!

    HelloNicely done and impressive construction and design.Does demonstrate though just how many other resources and skills are required.I want to do something like this eventually to do PCB's by laying down an inked etch resist and drilling afterwards. I used professionally a Versatronics robot arm to do the same with excellent results. The software was EasyPC with a Gerber output. If using micro solid tungsten carbide drill bits, the stability of the drill holder is paramount unless you have deep pockets. I like the idea of separating drill motor and solid-looking mandrel - any attempt to do anything less is going to result in writing off very expensive bits.

    View Instructable »
  • It's Possible to Use the Angle Grinder As a Chainsaw

    The basic angle grinder concept (right angle gearbox) and body finds its way into woodcarving tools like Arbortec and into biscuit jointers.Even when unmodified, angle grinders can bite back, as can wood carvers and biscuit jointers. There's a lot of torque at the spindle. The old spindle moulders were often described as the most dangerous tools in the workshop, but for my money there's not much to choose between any of them. As I found out recently, even a wrench on a stiff nut can cause torn muscles. You never stop learning, but don't end up in Accident and Emergency.

    View Instructable »
  • Phil_S commented on Elias Stratakos's instructable Wall Tool Holders1 year ago
    Wall Tool Holders

    Impressively tidy way to do things.Some days I have a job to find the workshop, let alone the tools.Certain tools, like small screwdrivers, disappear like pens and pencils, or the one Allen key that fits the hole saws. It's why I end up with three of everything and still can't find one when I need it. The problem is that at the end of a long day, tools get left where they are and next morning, the hunt begins.I'm guessing, without reading all the way through, that this is a small scale engineering/repair/model-making set-up. I also do a bit of electronics stuff, but there the problem is how to store thousands of very small components. For those, I use TicTac cartons, plastic test tubes or manilla money envelopes. A computer database is essential.

    View Instructable »
  • Phil_S commented on deba168's instructable Make 4 Useful Things From 9V Dead Battery1 year ago
    Make 4 Useful Things From 9V Dead Battery

    More birds get killed htting the wires.They must have some capacitance. If only they knew what a stunt they are pulling. When the linesmen are working on live overheads, the protective gear is impressive. On the "millies" thing, frequency is also important. Humans can survive quite high amperages if the frequency is high enough. DC is the killer causing spasm. I've just had a nerve conduction test involving many thousands of volts. One of the most painful procedures I have ever had and won't volunteer for that again.

    View Instructable »
  • Phil_S commented on deba168's instructable Make 4 Useful Things From 9V Dead Battery1 year ago
    Make 4 Useful Things From 9V Dead Battery

    Not to be recommended, but as an industrial electrical person, I have more than used up my nine lives. The fact that I am here now is down to good fortune and thick layers of dry skin. More than once I have had hold of a UK 240-V wire and felt nothing, but the bang when it touched neutral or earth tells otherwise. The golden rule if you want to try this insane method is one hand only and wear some thick rubber-soled shoes. Also avoid cheap power supplies with floating outputs. A 12-V DC PSU can put out 120-V relative to earth - using a metal-cased laptop on bare legs can give you a bit of an unwelcome tingle. An implanted cardiac device makes me much more wary now.

    View Instructable »
  • D.I.Y Ultra Quiet Shop compressor from a refrigerator motor (compressor)

    Commercially, similar compressors based on fridge components were produced by a Danish company and distributed from Scotland, now very like the Werther Sil-Air units. Initially, the attraction in industrial use was the low noise, but the reliability was poor and very rapidly, these units were replaced by conventional oil-free piston types, cheaper and more robust. The need to top up oil reservoirs and oil in the final air just added to the problems. I'm not sure why they failed so rapidly, maybe once removed from the closed loop fridge environment, moisture etc., just wiped them out. I couldn't recommend them for anything other than occasional use.

    View Instructable »
  • Phil_S commented on taifur's instructable Self-Powered Automatic Water Tap1 year ago
    Self-Powered Automatic Water Tap

    I would ditch that advice.Your lady wholesaler sold you plumber's hemp.I don't know where you hale from, but hemp has been banned for years. The problem with hemp, often used with a paste sealant, is that it harbours bacteria and is not used on drinking water supplies. A better solution is to use a gas grade PTFE tape (thicker grade) or a potable water approved sealant paste. At a pinch, dental floss does the same job as the hemp. Loctite used to do an approved version of hemp (looked like dental floss).If you have used hemp on drinking water supplies, my advice (water engineer) is to get rid of it ASAP

    Is this perpetual motion? There has to be a catch.The energy comes from the moving water which in turn comes from water stored in a reservoir that has been filled by pumps operated by the water supply company. Nothing is free, so you pay on your water bill.Some sums are needed here to see just how much energy can be extracted from ?? litres water moving past a generator (low efficiency), charging and timing circuit (medium efficiency).Full marks for effort and ingenuity, but an AA cell might be cheaper in the long run.

    View Instructable »
  • Phil_S commented on MircoSlepko's instructable Raptor 5: a Fully Iron CNC DIY1 year ago
    Raptor 5: a Fully Iron CNC DIY

    Huge effort.You could machine a house with that. Made to measure windows and doors.If there was a Nobel Prize for homemade CNC machines, you would be in with a good chance.Well done

    View Instructable »