edma194 wrote: ↑Tue May 18, 2021 9:04 am
Now the saw guides itself. Is woodworking becoming a spectator hobby while the tools do all the work by themselves?
Saw doesn't guide itself...you have to push it just like you have to push and maneuver the Shaper Origin (SO) around the workpiece. IF this is what the patent is and it works, you would push the saw across the plywood without needing a track to get a straight line. The SO uses tape with dominos painted on it to map out a visual space for the workpiece. From this patent, presumably you would put two markers on the workpiece, one on each side, to mark where the cut line should be. Then the user pushes the saw to cut that line. I believe for an SO the user is the coarse movement and the tool has a fine control to make sure the cut is where it should be. Presumably the saw in this patent would have to have some ability to alter the cut to maintain it, but how are they going to do that and not have a kickback or binding???
I delved a little more into the patent and as you can see below the patent applies to devices with a guide rail (as in prior art), but then they go on to describe how this patent applies for a device WITHOUT a guide rail. Not sure how they are going to get that straight line cut, but it does appear they intend to cut off rail here:
From the patent:
For example , workpiece W is located in a working
space R , see FIG . 1. The workpiece W is to be machined
along the target working line AL , for example , a workpiece
part W1 is to be cut off from a workpiece part W2 . In order
to make a straight saw cut , according to the prior art , a guide ruler or a guide rail would be placed on an upper flat side of
the workpiece WO , along which the hand - held power tool
20 is to be guided .
This is easily possible with the hand - held
power tool 20 , for example by means of the guide contours
on the guide surface 31 , which are not explained in detail , for engagement in the guide rail , which is also not shown , but this is not absolutely necessary with the principle explained below .
[ 0162 ] To determine the target working line AL , for
example , the workpiece markers M1 and M2 , which are at
a distance from each other and between which the target working line AL , presently a straight line , should extend , are
sufficient . For example , the workpiece markers M1 and M2
are line markers or dot markers on the upper flat side WO . With its underside , the lower flat side WO , the workpiece rests for example on a base , in particular on a work table , bearing blocks or the like . The working line AL is to be
executed starting from a workpiece front side WS to the opposite workpiece front side between the longitudinal workpiece sides WLR and WLL