Thanks båndsei.
Yes, I remember these from my ribbon days.
I currently use 3M Super 77 with paper as cutting mat, but it is way too stiff.
I will try the ReMount on plastic.
Yeah, it sure doesn't look promising based on your model results. It has been 25 years since I saw a pair of LFT-8s in person. The front and back magnetic channels were definitely staggered (3 in front, 4 in back) and really confused me as to how the magnetic field must look in the plane of the diaphragm. Here are some pics from archive showing position of front and rear channels of magnets and the voice coil pattern.
Speaking of channels...I guess you still need to add the ferrous metal channels around each of the magnets and I'm guessing the back plates you currently have should be removed or made non-ferrous. This would bring S magnetic pole around and position it along side the N pole on top and vice versa on bottom. Perhaps that is key in getting the improvement in field uniformity the patent describes.
Do you also cut long membranes using the Silhouette Cameo roll feeder, that is, using non standard cutting mats?
Do you prevent the cutter to travel back and forth for every vertical cut?
Well, that's the method that I'm using:
But even for this short 305 mm test membrane the cut is ruined because of the media is going back and forth all the way.
At full lenght, 2400 mm, this will be a disaster.
Disclaimer: I haven't tested this myself yet!
Inkscape seems to have a silhouette cameo plugin (https://github.com/fablabnbg/inkscape-silhouette) for which the topmost feature is:
Inkscape seems to have a silhouette cameo plugin (https://github.com/fablabnbg/inkscape-silhouette) for which the topmost feature is:
- Path sorting for monotonic cut. We limit backwards movement to only a few millimeters, and make the knive pull only towards sharp corners so that most designs can be done without a cutting mat!