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4DThinker

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  1. 4DThinker
    Now I'm bored again. Lined up the three prototypes and it looks like I need a walnut one and a maple one to finish the set of 5. I've got two more ideas for outer leg variations. Low resolution quick image or the three. Ordered some 500w photo bulbs which should be here Monday. Plan on setting up a backdrop in my garage now that the temps are warming up. I've dug out my photo flood set of lights and want to see if I can remember how to get some real nice images of these. I know I have enough Maple to make one out of. I might have enough dark walnut but will need to check. I can always pay too much and buy another piece at my local Menards if I get around to wanting some more. 4D
  2. 4DThinker
    Predictions missed again. 73° right now. No sound of any wind blowing trees against my house like it did yesterday. Feels nice out there.
  3. 4DThinker
    37° here at 8:00am. 71° is the new predicted high for the day. Sun is out and working on warming things up.
  4. 4DThinker
    Kismet. Perhaps a coagulation of details I'd come across before but didn't consciously connect.
  5. 4DThinker
    The 3/4" wide straps, and their location 5" down from the pivot point on the legs turned out freakishly perfect. When I first put the parts together with the new straps I was delighted to see how the straps ended up just below where the top ends up when folded flat. Had the straps been 1" wide they would have been just under the edge of the top. Any higher in position they would have been crushed under the top. Any lower and they would have been longer than they needed to be. This kind of verification that something is just right is very satisfying. I never drew up the parts folded up like the photo shows, and where the straps fell relative to the top was never part of the design intent. The other freaky coincidence was that the location of the straps was also the balance center of the inner leg frame. Anywhere higher or lower on the legs and I couldn't have hung it safely like this to dry. 4D
  6. 4DThinker
    63°, and on the downhill slide of today's temps. Wind has been whippy all day. 74° is tomorrow's predicted high. Guess we'll see if they still believe that tomorrow morn. 4D
  7. 4DThinker
    Test shots. Need better photo lights. 4D
  8. 4DThinker
    Cooler today. 51° right now. Might peak in the mid 60s. I can hear the wind reminding everyone it is still alive. 4D
  9. 4DThinker
    Already at 73°. Mostly Cloudy. No winds to worry about. Delightful day.
  10. 4DThinker
    44° with "haze" at 4:25am. Should warm up to the low 70s today. I can take it.
  11. 4DThinker
    Yep. Can't argue with the look of cherry. I was sort of surprised how well balanced the leg frame was hanging from the binding bolt hole for the straps. 2nd happy discovery with their location which leads me to believe it must be mystical perfection. An arbitrary 5" below the pivot bolt hole with arbitrary 3/4" straps rather than the 1" webbing I started with and might have used. That position leaves the straps just below where the top folds down to when the stand folds flat. Perfectly out of the way to not interfere with the folded up parts. A little kismet. 4D
  12. 4DThinker
    Started putting Danish oil on the Cherry parts. Bought the oil at my local True Value where it was $2 more than their advertised web site price. Not much of a true value IMO. Took it home anyway. Left my Chevy Bolt out on the driveway and set up a folding table in my garage for the finishing work. Big denim tarp over the table. First coat. This evening I'll put a second coat on everything. Personally I like the color/look of the cherry. 4D
  13. 4DThinker
    41°. Headed for 66ish. No chance of any rain. No wind warnings. Might be a nice day.
  14. 4DThinker
    1/4,1/4,1/4 boxes don't work right with baltic birch plywood. 6mm isn't 1/4", 1/2" is actually 12mm. If you have a 6mm bit then you're OK trying it. Using hardwood I prefer to use a 3/16" bit for the groove. Leaves more wood below the groove for less change of breaking off and a stronger corner. Made this blog post for my students: https://4dfurniture.blogspot.com/2023/10/making-rabbetdado-corner-joint-using.html Apologies for the videos. No editing software so videos are straight off the camera. Take careful measurements and this does make a good drawer corner joint. Make a good general box joint too. Four different box corner joints were fundamental lessons for beginning furniture design students. Also helped them learn several tools in the process of making the joints. 4D
  15. 4DThinker
    65° now, and warning is for "high" pollen tomorrow. Might have gotten high at the Van Halen concert I guess.
  16. 4DThinker
    70 now. Both apps agree with my outdoor thermostat. "Temps to jump on Saturday!" Another confusing weatherman description that conflicts with my lifetime experiences. I know how rabbets and grasshoppers jump. I know how I jumped as a high jumper in high school track. How the heck does a temp jump? Maybe they are talking about temporary employees, and a Saturday tradition where all temps jump up? While playing an 80's song by Van Halen perhaps?
  17. 4DThinker
    Results from the moulding toolpath cut: Now no sharp edges for the straps to rub against. Outside edges of the legs are already rounded over. I'll officially declare that all the machining, fabrication steps of this build are done. Legs have all been sanded down to 220 grit. The top needs more attention and will be the most interacted with part, so it'll get sanded to 300 or better before getting a Danish oil finish. The first two TV tray tables I made with no CNC help. That until I changed the 2nd one to straps between top stretcher and back edge of the top. This cherry version much relied on the precision available with my CNC. I could have done the binding holes and slots and such without the CNC, but the need for very precise positioning encouraged use of the CNC. The pivot bolts were the surprising new feature, and were far easiest to be made on the rotary axis of my CNC. Had I had a precision metal lathe I could have used it, but that is one tool I don't have. 4D
  18. 4DThinker
    48, or maybe 52 out right now. Depends on the app you choose to view. Heading for 70, with a "Dangerous" pollen level warning that both apps agree about. To me that sounds like a great name for a bad sci-fi show.... "Attack of the Dangerous Pollen Beast!!!!!" 4D
  19. 4DThinker
    At one end or the other, depending on which way the stand is unfolded, the straps bend sharply out of the slot to go around then toward the other leg. This is a CNC cut I plan to do to each slot, on the side they exit their slot from, to take the sharp edge off. Moulding toolpath in Aspire. 1/8" round nosed bit. 4D
  20. 4DThinker
    Playing with the macro feature of my camera. This is what the ends of the straps looks like with a grommet in them. For this application as tension straps in the folding x-frame TV tray table their ability to pivot around the binding bolt that holds them in the slot is critical. The grommet kit I bought came with a punch intended to use with leather or cardboard or similar sheet materials, but NOT nylon or poly straps/webbing. I found I could put the punch in my drill press, then manually turn it while pressing down to cut a clean hole in the webbing. 4D
  21. 4DThinker
    So far 68 appears to be the high for today. Audibly windy all day. Somewhere/time in my life I was told that wood from trees that grew in windy areas would be stronger than wood from a forest where the wind never bothered it. Even if the trees were the same species. As wood I've used never comes with info about where it grew I can't verify. I have encountered boards with serious internal stress that revealed itself during a table saw cut. Surely the tree it came from must have had a stressful life. Doncha think? 4D
  22. 4DThinker
    Yep. That feature is what the patent for it is about. Flip the top over, pull the leg frame through to turn it inside out. Advantage of asymmetric X leg configuration. 4D
  23. 4DThinker
    First try with straps. Doesn't look bad, but base is spread out too much. Next try the straps will be 1/4" shorter. I like the army green straps with the cherry wood. 4D
  24. 4DThinker
    Got the binding bolt holes cut for the straps this morning. Double checked before starting and checked again once the toolpaths were loaded that they would be cut in the right place. Have to make the straps with grommets on each end, but that shouldn't take more than 2 tries to get them just the right length. Once those are done and verified I can glue the inner legs to the stretchers, put a radius on the outside of the outer legs, and sand it all to get ready for a finish. Considering Danish oil. Always have liked how cherry reacts to it. 4D
  25. 4DThinker
    Wrong and Patched. Recut. Second try was a little offset from the first. Hard to zero exactly the same on any piece removed then replaced on the CNC. Close enough though, and won't be noticed behind the strap and under the table between the legs. 4D
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