Holder plug - Antenna 5.6m M10 - for tuning coil

I just buy Stainless Steel Telescopic Antenna: long 5.6M and ends with  M10 Thread. 

I design this coil plug,  so I can reuse already 3d printed coil and keep to have banna plug  options and coil holder on the side as well.  The coil holder should be sufficient to hold telescopic antenna without creating additional support from bottom. 

Telescopic 5.6m provide good base for adjustment of wave length base on size and coil provides additional tuning space.

I can revert to old fishing rod vertical anytime, since I have banana plug on side or even I can use M10 thread as replacement connector for the wire.

The coil provides additional ~5.27m of wire, which can be shorten (using bypass) base on tuning needs.

I connect M10 screw using spot welder to pure nickel strip and then connect it to wire.
The connection to M10 screw must not be spot,  just bend piece of metal sheet in the form of “L” sign and push M10 screw with shorter side of “L” sign  to plug up.   . I use metal sheet in size 0.1x8mm.

From the side I drill one hole for wood screw about 1cm long to plastic. This provides the stability for plug platform. And plug will hold in place also in windy conditions.

The model of the plug has been created base on design of the coil model, see original.
Vertical antenna loading coil SA2CLC (thingiverse.com)