Oooops 
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I would love to get the components for this (assuming it is a 70cm version) and 2M, but unfortunately I don’t have a 3D Printer
Adam @K6ARK has published a tiny variable loading coil for adding 30+40m to the KH1 4ft whip antenna:
I built one and it works well, although the efficiency of a 4ft vertical on 40m is probably best described as ‘for emergency use only’ 
However, it showed promise on 30m so I reused Adam’s STL files to make a fixed loading coil for 30m. I used 38 turns of 22awg wire for 12uH which works well on 30m with the KH1:
Testing in my garden the other day I was getting good RBN spots around Europe and chased @HB9DGV on 30m with the 4ft whip and 33ft counterpoise, Rolf gave me a 579. So I think this is quite usable to add 30m to my ultra light kit. Now just need to fully recover from recent surgery so I can get back out on a hill again!
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On which CAD programme have you decided?
I started playing with freecad yesterday. I don’t have any opinion on it since I’m new to cad.
I also have fusion360 from a previous attempt at editing 3d files. But for now I think I should focus on freecad only in order to not get lost. None of them looks very intuitive anyway. Or ?
Yes, not intuitive - and since I don’t need it often, I feel it’s like starting from scratch everytime I try. Therefore haven’t been able to decide on a 3D printer yet. Let me know once you have a nice coil design for the 5.6m whip…
If anyone has tried the older versions of Freecad, you will be pleasantly surprised with Freecad v1.0 released at the end of last year, it is now much more like a professional CAD program.
There are loads of YouTube tutorials, for example this one starts at the start with setting up Freecad v1.x and progresses step by step in a 10 part series.
The thing with a 3D printer is, once you have one, you will wonder how you ever did without it 
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Yes I had 0.2 version installed from some time ago and now I updated to the 1.0 and it’s looking very neat.
I think more than the software itself it’s the whole cad environment that’s a bit awkward at first glance. To make a simple cylinder you have to draw a 2d shape, apply some constraints then extrude it and so on. Many tedious / abstract steps for a simple task. But I understand that for more complex objects all those steps are mandatory to keep proportions and coherence between the different parts.
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Use the newer Part Design workbench. It’s basically a graphical version of openscad. Add an Additive cylinder, tell it the height. Need a tube? Add a subtractive cylinder of a smaller diameter.
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I use https://www.tinkercad.com. Of course it’s not a fully blown CAD software but works well for lazy people like me who need to design fairly simple stuff quickly and don’t want to learn a complex tool. For example I designed my Pocket Transmatch cover and the SOTA ornament with it:
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I started playing with Autodesk Fusion a while back mainly because it was the one used in the first tutorial I watched.
At first I remixed others designs before making my own. I find it quite therapeutic/addictive 
Anyway, this is my offering to this thread, a case for the BaMaTech TP-III paddle.
All the designs and details are here.
I’m also working on this for the new Lynnovation CTR2-Dial.
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Well, after quite a few hours on freecad, I managed to design my own base for the chinese whip.
I should receive the printer next week. If it works I will upload it.
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From local craftsman KC6QHP who does amazing builds: Portable 10 GHz Radio Housing by TonyL | Download free STL model | Printables.com
Action video of the rig in the field: https://www.youtube.com/watch?v=rZdAYAiE_w0
Just wow in so many ways. Love the slip in Talentcell.
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I think this is a great idea. Do you still have the .stl file?
73 de OE6FEG
Matt
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I received the printer and after the traditional test print “benchy”, I printed my first object:
The print is good. Little imperfection in the hole for the BNC connector because I ignored the overhang. If I need to print another one I will add supports for this.
I’m waiting for heat inserts, screws and banana inserts to finish and test the project. So far, I tested the coil and as planed, it goes from 0 to 20 uH.
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That answers a Question asked on Frasers Latest thread! ~Thanks Tim 
ive passed it onto our club chat, see if one of the chaps with a 3D printer fancies having a go!
Alan
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I used onshape to design a holder for my solar charge controller on top of the battery. I typically use this for longer POTA activations with my solar panel. That battery has always been charged with solar exclusively.
The 4 posts, the battery cover, and the charge controller holder were printed separately and assembled with just friction fit.
73, Brian, NM5BG
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Just published a design for an EFHW antenna winder with an enclosure for the transformer. The design goal was to make it as small and as light as possible. I use a transformer built from a kit sold by HB9ZHK.
Have fun with it!
73 Heinz
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