Hi again!
I will try to answer your questions, but before some background information:
The enthusiasm for the material wood existed in the family for a very long time. In wood processing, we can look back on a family tradition of more than 80 years. We have always looked for ways and solutions to produce faster and better and so we have gained experiences with scroll saws. We realized that conventional scroll saws are subject to certain restrictions and limitations, which i would like to explain to you briefly.
Initial situation and problems with conventional scroll sawsAll previously available scroll saws share almost the same functional principle. What has proved to be problematic is that the manual rotation of the workpiece, especially for fine internal cuttings, takes a lot of time and can be very complicated and inaccurate. Also restricted is the length (and width) of the workpiece as it is limited to a certain width, predetermined by the construction of the longitudinal passage. In case of a wider workpiece, the rotating workpiece gets blocked by the operator or the machine?s saw arm or gallow. Another construction wise problem of conventional scroll saws is the short customary stroke length. With a length of, for example, 12 mm and a material thickness of 15 mm, a few saw blade teeth never leave the material and the produced sawdust cannot be transported away from the material. The sawdust remains in the material, produces a heat accumulation and forces the blade out of the shaft. The result are crooked, unclean cuts and quickly torn saw blades!
The invention of the HarthieMister Hartmann experienced these problems in his own production process and he needed a solution. He followed his idea that the saw blade itself should rotate, not the workpiece. The first attempts were hard and tiresome, but finally he invented a ?with one hand endlessly rotatable and from the center movable blade shaft?. The basis for the new saw was created. After four further years of development and countless tests, we can now proudly present the well-developed, sophisticated result, the Harthie E-300 scoll saw, which solves all the problems mentioned above!
The HarthieDuring the working operation, the blade shaft of the Harthie scroll saw is endlessly rotatable through 360 degrees with only three fingers and movable in a diameter of 35 mm from the center. With this innovation, our scroll saw makes possible cuts in every direction without the need to move the workpiece. This leads to a never known before precision and sensitivity in sawing. There is no longer a limitation given by the longitudinal passage and during the construction of the scroll saw, special attention was applied to a very high sawing stroke of up to 40 mm. This results in a prevention of heat accumulation, a better utilization of the saw blade teeth and a higher cutting speed with less rpm (revolutions per minute), but reaches a maximum cutting speed of 66 cm per second!
1000 (rpm) x 40mm (stroke) / 60 (seconds) = 66 cm per second
while conventional scroll saws with the same rpm and a stroke of 20mm on average only reach half this speed (33 cm per second)!Here the answer to your questions:Is it a different skill set? Yes it is!
Was the scroller in the video a scroller for many years before using this machine and how long did it take him to become proficient at using this one?The scroller in the video was a scroller for many years before using/ inventing this machine! In our experience, it only takes a few moments for the new principle has been understood.
But before you become proficient at using this machine you will need some more hours of work!
It is quite easier to proficient the new technique for People who never worked before with conventional scroll saws but you will learn it!
Do you have to use a large blade like the one used in the video? Will smaller blades break because of all the movement?NO! You are able to use the smallest blade which could use with conventional scroll saws as well.
The Harthie scroll saw works with commercially available and inexpensive saw blades with a length of 130 ? 160 mm (and shorter), which can be easily inserted and taken out with simple adjustment tools.
What is the maximum depth of the cut? I don't speak German but I saw a "50mm" in one of the videos. With all that open sapace up top, does the saw still only cut to a maximum of 2 inches?Yes, it is still a scroll saw
50 mm (2 inches) is maximum. The saw could cut to a maximum of more, but the result would not be clean and you would not receive vertical cuts!!
Does the saw have variable speed?For sure! Due to electronic speed control, the number of revolutions can be regulated infinitely between 400 and 1000 rpm.
Why the heck does it still require a separate tool for reattaching the blade between fret cuts? Sry, i do not understand the question...
Where is the saw available for sale? Only in germany for now
but at the end of the year, our machine will also be available in the U.S. and the rest of the world.
Will your representative be working the show circuit in the US so people can see it in action?
Sry, I can not yet answer...
Bye,
Marco
