Can we bring back the shrill scream of baby bees to basketball courts and parking lots everywhere?

No - because we are too old to out run the cops anymore 

A brief search today yielded some free 3D scanning software using a smart phone.  It was pretty slick. It matched the high end scanners to within 0.2 mm.   My thought would be to disassemble an existing model to individual parts, scan and print each part.  Theoretically you could reproduce exact copies of the original models, part for part. 

vote #2 for the Spook

The Cox Spook would be a wonderful project! It was a fantastic flyer.

I've been trying to get a friend at work with a hobby size 3D printer to print me up a Spook kit.  He just has no interest.  I've even thought about buying a printer and doing it myself.  I just have to learn how to convert a .dwg file to something that a 3D printer will use.

Mark

The Spook doesn’t look all that hard to reverse engineer.  Scanner not likely required. Anyone got one nib?  I can do the CAD and print a few samples. 3D printing is not injection molding.  It’s a completely different process so there maybe some slight design changes to suit. I’d actually prefer to make it a 21st century version for electric power.

Paul

Paul,

There are .pdf and .dwg files for the Spook that have been floating around for a while. Looking at the files that I have, it looks like a drawing was made by Doug Dahlke in 2002, and an AutoCad file by Randy Heydon in 2005.  Doing a search here, I see that Mr. Dahlke passed away in November of 2012.  Before my time here on SH.  A search for Mr. Heydon shows he passed in August of 2019.  I believe Mr. Heydon is the source of my files via Ron Cribbs.  If you PM me your email address we can get the files to you.  But I doubt it would do well as an electric, with that long nose.

Here is a thread on the CEF about building a copy with pictures if that helps:  https://www.coxengineforum.com/t3877-spook-can-it-be-done?highlight=spook

Mark

I wish it was that easy.  Truth is, it takes a fair amount of time to convert from 2D .dwg to a usable 3D CAD file.  For printing, the 3D file is saved in something like an .stl file format.  Then the .stl is opened in a slicer program that divides the model into print layers and generates the machine code for the printer, usually a gerber file or .gcode.  So after a few hours of work here's what I printed so far.  These were some easy parts.  The bell crank centre mount took about 55 minutes to print and the rib 28 minutes.  The amount of PLA filament used literally cost just pennies.  The final product is very economical at the cost of a fair amount of up front labour.

I'm using OnShape for the CAD, Cura for the slicer and a Creality CR-20 Pro printer.  I'll keep chipping away at this project and see if I can get close to something that might be usable.  I might need some more help.  Does anyone have a copy of the original instructions?  That might help fill in some blanks.

Paul