Poor man scroll saw (with jig saw)

Hi all!
Since I'm trying to build a couple of petal horns with 4mm plywood and I have no scroll saw, I decided to build a sort of frame for the jig saw.
I found a steel scrap, rectangular bar 12mm thick, 4x M4 threaded hole, a perfect match for a sturdy frame easy to tighten in the vise.
Considering the entry level jigsaw I can't feel vibrations, everything seems ok.
A little attention is needed, the blade is free to move and there are no protections installed till now. I don't recommend the building of the frame without protections, but I'm cutting large pieces, my hands are far from the blade and I'm using a pedal switch to turn on/off the jig.

Ps: the screw in the last picture is trimmed, batteries of my camera finished before completing the task

Attachment 32129 Attachment 32134 Attachment 32135

Attachment 32136 Attachment 32137

<!-- BEGIN /var/www/html/homemadetools/protected/modules/zeus/views/tool/postUpdate.php -->
Thanks rendoman! We've added your Scroll Saw to our Woodworking category,
as well as to your builder page: rendoman's Homemade Tools. Your receipt:

<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/homemade-scroll-saw-20"> <img src="/uploads/227958/homemade-scroll-saw-20.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/homemade-scroll-saw-20">Scroll Saw</a> <span> by <a href="https://www.homemadetools.net/builder/rendoman">rendoman</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/scroll-saw'>scroll saw</a>, <a href='https://www.homemadetools.net/tag/jigsaw'>jigsaw</a> </div> </div> </div> </div>
<!-- END /var/www/html/homemadetools/protected/modules/zeus/views/tool/postUpdate.php -->