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My first one, a cheap plastic version, disappeared in '71 or 2. I bought a replacement "for fun" in about '84. Ironically, it was marked with the company logo of Collins Radio, whom I went to work for in '96 and retired from almost 20 years later. I still have it, two feet from my left hand...

Somebody ought to do a poll to see how many of us still have slide rules. In another thread or place, of course!

Thanks, Henry. Can't tell you how shocked I was to read that. Thought it couldn't possibly be the case, but I went and looked. Sure enough, if you go the Rhino download page, there's a download of Grasshopper for Rhino 5. Bottom right side of the page. The file says it's a Work In Progress...

I second both Steamchick and michelko: WoW! and what a piece of art!

Hi, Noah, Also from Florida - CFL in my name is for Central Florida. Making an engine without any tools is going to be tough. You can cut blocks with a hand hacksaw but a little jigsaw helps a lot. Making things like a cylinder that has to be concentric and constant diameter over it's...

Your Blender to Rhino 7 to Alibre workflow is one I'm not likely to be doing, but it's cool. For me, it's more likely to be either Rhino or Alibre. Which Alibre is that? Atom or the big one, Design? I have Alibre Atom V23 that I got on sale about 15 months ago - Black Friday Sale '21 to make...

In a great coincidence, in this morning's email I got an invitation to a training seminar on parametric modelling in Rhino 7. If you've seen much about Rhino 7, you've seen reference to a feature called Grasshopper, and I believe that's when Rhino became parametric. Is it a good parametric...

I see references to lower numbers, like BeckerCAD 12 with reviews back to '21 and a BeckerCAD 10 apparently from 2019. One review contains info that it's a repackaging or rebranding of another program. Apparently a German software package that has either been acquired by the British company or...

Since no one has chimed in about it (that I've seen!), I wonder about how good it is. One advantage of Rhino5 is that it has a massive list of file types it can import and export. By default it saves things in its own format, and since I have Rhino files (*.3dm) dating back to 2004, anything...

Well, that's a question for their web designer, not us users. It makes it look like it's either a recent add-on product or one they don't care about keeping alive.

Sure does. I get exactly the same site I got last night. Do you type the entire URL or just www.softmaker.com? I don't know what sort of hardware and browser you have but if I hover my mouse over the large type BeckerCAD in the URL I can see there's more. It's...

For what it's worth, it worked for me. NEW: BeckerCAD14 3D Pro Draft | Planning | 3D Design | Visualization

Gee, sorry I missed the original post. Might have been able to make the 2-1/4hour drive. It looks like a fun way to spend a few hours. I'm NE of it in Melbourne.

It has been interesting to watch. What's next? Do you have another design, another kind, or another thread going I haven't bumbled and stumbled across?

One of the reasons I find this design process interesting is it's so far out of "my world." All I know about springs is some Physics 101 or Statics stuff on spring constants. And I've wound a few to different designs, stuff like "wind .010" music wire 1" long, close wound." These things don't...

Is the hit and miss operation working as you want? I can't discern any hit and miss action listening to and watching it.

The search for the Goldilocks spring? "This one is just right!" There should be a way to measure the spring constant and bound the problem, figuring how many grams/cm are too much and how many are not enough, but I honestly don't know how to go about doing that analytically.

It seems like a useful thing to make up one of these adapters for any sparkplug size we're likely to be using. Before trying to turn the engine over for the first time, stick the pressure tester into the cylinder and test how well it seals. I can almost talk myself into saying every cylinder...

The milled pieces definitely look like the way to make those. One question. How did you do the third tube, the one that gets threaded? Are they threaded so that the start and end of the thread always leaves them aligned your sample?

... or there might be a sample size for engineering evaluation.