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3Instructables20,862Views29Commentsnear Vienna/Austria
I am a technical consultant in IT and Telecommunications, mainly for international data and multimedia networks. In my free time I enjoy sailing, being in my attic workshop and make stuff for my house or my selfbuilt sail boats (Pirat, Optimist), I do play (p, g, dgo) and write music, too.

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  • MikeD50 commented on bekathwia's instructable Getting Started With Arduino2 days ago
    Getting Started With Arduino

    let's not minimize the value of "blink" programs ... they are a μP's "Hello World" and a fundamental abstraction of how to communication with the outside world ... remove LED ... put relais / solenoid / stepper / pump / whatever ...What I though want to see more of (as key concepts):- key debouncing (nearly always forgotten - with sometimes dramatic unexpected effects)- waiting (= doing other stuff / interrupts) instead of sleeping/delaying (= doing nothing but counting registers down)

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  • The NanoStillery™ - Automated Whiskey Distillery

    Shouldn't it be enough to measure temerature at the top of the system, before vapour is entering the cooler ... if temp <= 65C then Methanol / solenoid valve to waste, if temp >78 (say well above) then Ethanol / solenoid to treasure sink, if temp > 95 (or so - depending on what you burn) then end of travel / drive down boiler, solenoid back to waste ... you may want to add a time delay to cater for the travel through the cooler.

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  • MikeD50 commented on mdheath's instructable Concrete and Wood Slab Table2 weeks ago
    Concrete and Wood Slab Table

    Thanks - I was wondering mainly about the punctual load on the legs/bars ... 450~500 lbs seems still OK.For the expansion of wood vs. concrete I am on one hand not too concerned, OTOH thinking of covering the sides by strips of foam wrapped in thin plastic, leaving a 1-2mm gap when removed after casting, and filling the gap with black elastomer. And when properly sealed, the wood wouldn't pick up significant amounts of moisture anyway.One word of caution though: be carefull with Epoxy when the wood is greatly exposed to UV radiation ... it's likely to white out after a few years ... I had to remove it from the mahagony deck of my dinghy - which even was (permanently) covered by thick coated canvas - after only 5 years, even with 7 layers of PU varnish which is said to be highly reflecti...see more »Thanks - I was wondering mainly about the punctual load on the legs/bars ... 450~500 lbs seems still OK.For the expansion of wood vs. concrete I am on one hand not too concerned, OTOH thinking of covering the sides by strips of foam wrapped in thin plastic, leaving a 1-2mm gap when removed after casting, and filling the gap with black elastomer. And when properly sealed, the wood wouldn't pick up significant amounts of moisture anyway.One word of caution though: be carefull with Epoxy when the wood is greatly exposed to UV radiation ... it's likely to white out after a few years ... I had to remove it from the mahagony deck of my dinghy - which even was (permanently) covered by thick coated canvas - after only 5 years, even with 7 layers of PU varnish which is said to be highly reflective ... not the nicest job ;-)

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  • MikeD50 commented on mdheath's instructable Concrete and Wood Slab Table3 weeks ago
    Concrete and Wood Slab Table

    Great project - congratulations!I may have overlooked this in the text, but would it be possible to tell what's the approximate weigth of these tables please?

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  • MikeD50 commented on andrewwilson's instructable Emergency Stop Button 1 month ago
    Emergency Stop Button

    100% agree - wire ferrules are the way to go if the wire is pressed (by a screw) as tin will flow away over time. In EU it's even forbidden to tin wire ends that are pressed by screws --> VDE 0100-520 (11.10.2)

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  • MikeD50 commented on ChipsWoodShop's instructable Mini Vise in Minutes1 month ago
    Mini Vise in Minutes

    Best & cheapest supply of square nuts comes from your buddy's server room where they live as "cage nuts" (usually M6) and are used to screw all kind of gears into racks *ggg*

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  • MikeD50 commented on superdave.morris's instructable Optimist sailboat build1 month ago
    Optimist sailboat build

    with pleasure - failed to paste them here in comment, so please see personal message to you.

    Here you are ...all dwg are AutoCAD 2014 formatrumpf.dwg ... complete cad with all 2D and 3D elements on various layers (rumpf = hull)all CAM files (Schnitt = cut) are 3D Polylines with some short parts of the lines elevated by half of sheet thickness so that all parts remain in their sheets. You need to see if your CAM device (router) can handle these lines where at some points there is only Z movement, without any XY movement ... our router had some problems with that3D Schnitt 06mm Okume 1.dwg ... 1st sheet plywood 6mm3D Schnitt 06mm Okume 2.dwg ... 2nd sheet plywood 6mm3D Schnitt 12mm Okume 1.dwg ... sheet plywood 12mm3D Schnitt 19mm PSpan 1.dwg ... 1st sheet 19mm particle board - produce 2 times!3D Schnitt 19mm PSpan 3.dwg ... 3rd sheet 19mm particle board3D Schnitt 19mm PSpan 4.dw...see more »Here you are ...all dwg are AutoCAD 2014 formatrumpf.dwg ... complete cad with all 2D and 3D elements on various layers (rumpf = hull)all CAM files (Schnitt = cut) are 3D Polylines with some short parts of the lines elevated by half of sheet thickness so that all parts remain in their sheets. You need to see if your CAM device (router) can handle these lines where at some points there is only Z movement, without any XY movement ... our router had some problems with that3D Schnitt 06mm Okume 1.dwg ... 1st sheet plywood 6mm3D Schnitt 06mm Okume 2.dwg ... 2nd sheet plywood 6mm3D Schnitt 12mm Okume 1.dwg ... sheet plywood 12mm3D Schnitt 19mm PSpan 1.dwg ... 1st sheet 19mm particle board - produce 2 times!3D Schnitt 19mm PSpan 3.dwg ... 3rd sheet 19mm particle board3D Schnitt 19mm PSpan 4.dwg ... 4th sheet 19mm particle boarddo not alter thickness of particle board as slots wouldn't fit anymoreYou also need various strips of oak ... notably 9mm for keel and bilge stringers. BEWARE: these stringers acc. to class regulations (CR) must be plywood as well ... I am currently investigating with IODA if solid wood (oak in my case) would be appropriate, too.BEWARE: for some Okume sheets commercially available density is a bit on the low side, so your hull might be 2-3 kg below limit, as may your daggerboard and rudder be, too. Cut a daggerboard, add retaining strips from oak ... if >= 2kg you're fineHave fun and keep in touch (via PN)!

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  • MikeD50 commented on MadeleineDouglas's instructable Clamping at ANY Angle1 month ago
    Clamping at ANY Angle

    This 'ible is a gem! The new trick for me was the drill in the corner ... enlightning!-> Favourites!Thanks for sharing

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  • MikeD50's instructable The last Splicing tool I build's weekly stats: 1 month ago
    • The last Splicing tool I build
      1,295 views
      27 favorites
      3 comments
  • MikeD50 commented on sspence's instructable DIY 1000 watt wind turbine1 month ago
    DIY 1000 watt wind turbine

    Good job on the generator!Could you elaborate a bit on the mechanics, e.g. how turbine rotates around vertical axis, are you taking any measures against cable twist, are you offsetting your turbine in strong wind in any way (mechanically or other)?Thanks MIke

    Thank you for the explanations and pointers ... good harvest ;-)

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  • MikeD50 commented on MikeD50's instructable The last Splicing tool I build1 month ago
    The last Splicing tool I build

    maybe not ... they might see this as competion LOLSince I have this tool I can splice braids which are off limits for "pushing" tools ... like moderately used ones or more densly braided ropes

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  • MikeD50 followed woodenProjects2 months ago
  • How to make a Cubes and Pegs Puzzle out of Scrap Recycled wood

    Well done ... I like the finish on pg 3.One question though: when the cubes are 1.5 and the dowels are 1.25 and they need to be sunk into the cubes by a cretain length, how can their other ends be visible on the other side of the cubes they're penetrating as shown in pg 3? Are these glued in "dummies" closing the "female" sides on the far ends?

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  • MikeD50 commented on superdave.morris's instructable Optimist sailboat build3 months ago
    Optimist sailboat build

    Thanks for your inspiring post ...started on 29-Oct-2015 by cutting my CAD plans into plywood (hull) and chip boards (temp frame)crossed the finishing line on 14-Aug-2016 with a successfull Maiden Voyage after ca. 200 hours of building

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  • MikeD50 commented on diycreators's instructable Concrete Candle Holder5 months ago
    Concrete Candle Holder

    Good job ... I particularly like the wooden bottom.In step 3, when you wrap the sides of the candles in 3 - 5 rounds of adhesive tape (e.g. electric insulation tape) your holes will be wider and you save the "scraping off" in step 4 which may destroy the edges of the holes (stone accidentally falling out, edge collapsing, etc.). Pulling out the candle beakers from the concrete is easier as well.

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  • Construct curves to smoothly connect lines at any angle

    I have added a 4th step which you may want to review for more on circle vs. parabola

    I have added a bit more background to compare with compass as step 4

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  • Construct curves to smoothly connect lines at any angle

    hmm ... perspective drawing (of circles and circular arcs) require ellipses or elliptic arcs. Look under "conjugate diameter" and "Rytz"

    as I used different parts of wood - yes ... the grain changes and I have a tiny little gap where the pieces touch each other ... as far as the curve itself is concerned - no ... as the slope of the curve gradually and slowly changes from the one edge towards the other.

    maybe because you didn't look into boat building school books of 1920 *LOL*

    nope - I think it's not my aim to contest ... I am happy with sharing per se ;-)

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