Re: BG-12/16 Laser Cutout

Paul Jorgenson KE7HR

The larger size is nearly 1:24th at 22" wingspan (560 mm).

A full skeletal version would be an enormous amount of work to get the drawings to fit correctly.  Just to convert the 3-view to a file that I could cut took several hours of fiddling.  Some young engineering student could take on converting the plans (or what passes for what is left after all of these years - brittle and faded) to a CAD system where CNC parts could be churned out.  Then take the fruits of all of that work and scale it down for the laser.  I could never invest the time and energy to get any money from such a project, myself. 

Paul Jorgenson KE7HR

On May 6, 2020 at 2:36 PM derry <dbelcher07@...> wrote:

Hi Paul,

Good to see you are keeping the spirit of Gus Briegleb alive with your laser-cut BG12-16s. 😊

Pity you don’t have a full set of plans to copy print at maybe 1:24th scale (approx. 25 inch span) as you could produce a full skeletal version for desktop display. This would be impressive!  (I’d put my name down for one!)

I was given a futuristic stylised trimaran kit at Christmas from my son-in law in Denmark and have to say it was quite therapeutic to put together.   






Sent from Mail for Windows 10


From: Paul Jorgenson KE7HR
Sent: Thursday, 7 May 2020 7:40 AM
Subject: Re: [BGsailplanes] BG-12/16 Laser Cutout


I do sell laser cut and engraved products at a local craft show (before the virus...) but have only ever shipped cork coaster sets before - they are difficult to break.  For USA shipping the Large Flat Rate box would be required to ship the un-assembled parts and those cost over $18 today.  With the laser time and materials, I would have to get $40 US to ship one out.  It may be easier to find a maker space locally had have them cut it out...  If someone really wants one, then email me and we can work it out.  ke7hr@...


I did an upgrade.  Well, two upgrades.  V2 has two fuselage parts mirrored to have the engraving (canopy and rudder) be shown on both sides.

V3 is the two sided version super sized to be double the wingspan - 560 mm assembled.  The wing was split and a dovetail was used to join the two wings.  The file has the dovetail made slightly undersized so that filing is needed for a perfect fit.  The double wingspan make for an impressive eye catcher to hang from the ceiling.


Photos shows V1 and V3 sitting next to each other on top of the laser machine.



Paul Jorgenson KE7HR








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