Tell us about yourself!

Complete Your Profile
  • Rideable Segway Clone - Low Cost and Easy Build

    This is a really REALLY brilliant electronic implementation; described so professionally that I really felt this was repeatable by anyone, as you claimed.

    View Instructable »
  • betwys1 commented on imsmooth's instructable Homemade Liquid Nitrogen Generator3 months ago
    Homemade Liquid Nitrogen Generator

    I use nitrogen to inflate my aircraft tires and nose gear - but if that were the only purpose for this wonderful project, it would be simpler just to use a 40 cu ft bottle, regulator and flex hose/inflator valve as I do. Cheaper too!

    View Instructable »
  • betwys1 commented on makjosher's instructable The Ski Sled4 months ago
    The Ski Sled

    Detailed Design Fixes.The angle screws are a design weakness, arranged to catch on YOU if you slide off. So it's better to arrange the bracket underneath, and fold it from sheet aluminum UNDER the steering bar: stronger and safer. Loved the use of stepped screws. Better to have a wood slat over the center spine - it's warmer!

    View Instructable »
  • betwys1 commented on tomatoskins's instructable 8-Ball in Solid Wood Cube8 months ago
    8-Ball in Solid Wood Cube

    I ran tests and deleted my earlier suggestion to soak in 10% ammonia water. I don't advocate soaking in water either. Steam or Ammonia steam is the best way - and plenty of exposure time. I ran tests using iron pipe and found ammonia steam is a little better than plain steam because it reduced splintering. A heater like a camp stove,in a box, heating a pot with a bottle-full of 10% ammonia water heated to boiling. 15 minutes of ammonia steam was enough for lollipop sticks which are thin. Several hours should work for the thicker sections in this trick block

    I am presently running tests to optimize conditions for making wood pliable. Not through with this yet, but I can already see that it is better to use steam or gaseous ammonia rather than soaking in water or ammonia solution. In addition, these gases have to penetrate the wood completely to be effective. The thicker the wood, the longer it takes. I find it is not necessary to use bottled ammonia (anydrous ammonia) because 10% domestic ammonia solution can do the job if it is boiled out of solution. Not sure if steam or ammonia is more effective, guessing ammonia, it it is done right

    View Instructable »
  • betwys1 commented on tomatoskins's instructable 8-Ball in Solid Wood Cube8 months ago
    8-Ball in Solid Wood Cube

    Hate it when a tip of mine is found wanting. My impeccable source was contradicted in numerous places, so I thought I had better do an experimental check - to get out of the 'He said - She said' business. I bought two 8in X 1/2 in black pipe, two 1/2 black end caps, a black 1/2 in tee, a black 1/2 in elbow a galvo bushing 1/2 to 1/4 to suit the 0-200 psi gauge I had on hand. This is arranged in an upside down ell with a pressure gauge at the bend using ptfe tape I had on hand..With a quart of 10% ammonia, the materials cost $11.55 I have a bunch of lollipop sticks on hand as test objects. Here's what I propose:Half fill the vertical eight inch leg with room temp water. Place 2 or 3 sticks in the other dry horizontal leg. Close. Heat the bottom cap until the pressure rises to 25 psi, ...

    see more »

    Hate it when a tip of mine is found wanting. My impeccable source was contradicted in numerous places, so I thought I had better do an experimental check - to get out of the 'He said - She said' business. I bought two 8in X 1/2 in black pipe, two 1/2 black end caps, a black 1/2 in tee, a black 1/2 in elbow a galvo bushing 1/2 to 1/4 to suit the 0-200 psi gauge I had on hand. This is arranged in an upside down ell with a pressure gauge at the bend using ptfe tape I had on hand..With a quart of 10% ammonia, the materials cost $11.55 I have a bunch of lollipop sticks on hand as test objects. Here's what I propose:Half fill the vertical eight inch leg with room temp water. Place 2 or 3 sticks in the other dry horizontal leg. Close. Heat the bottom cap until the pressure rises to 25 psi, time it and chill out. Unscrew the top cap and remove the lollipop sticks.They should be dry. Check the force to deflect them through 90 degrees.Then repeat the experiment with 10% ammonia half filling the vertical leg.Heat as before. Chill after the 25 psi is reached. Remove the lollipop sticks (outside) as before and check the force needed to bend them. Do you see any problems with comparing a brief steam soak with a similar ammonia gas soak?When I run the test, I'll send details. Here's a picture of the rig hanging off a chair back.

    View Instructable »
  • betwys1 commented on seamster's instructable Golf balls in a Coke bottle1 year ago
    Golf balls in a Coke bottle

    You need to add ammonia to the warm water to really make the wood turn to spaghetti!

    View Instructable »
  • betwys1 commented on tomatoskins's instructable 8-Ball in Solid Wood Cube1 year ago
    8-Ball in Solid Wood Cube

    Here's an old wood-worker's tip, for the folks who have repeatedly split the cube: soak in warm water with ammonia solution added. Wood turns to spaghetti, this way.

    View Instructable »
  • DIY standalone Weather Station powered by Arduino

    The North wind blows FROM the north. Yours indicates south, I guess?

    View Instructable »
  • Cleaning Rust Off of Tools Without Harsh Chemicals

    Salt and vinegar works - in some ways, it works too well: if there's no rust, it eats bare steel. A better way, the way used by museums, is the electrolytic method. All it takes is a battery charger, some washing soda (though this is not critical) and a container that will hold water. If the object to derust is attached to the NEGATIVE lead, and a metal sheet in the liquid returns to the positive lead, the rust is removed, then the action STOPS!

    View Instructable »