Enhanced Miter Saw With Embedded Lamp for Cutting Area Illumination and Electrical Circuit Means for Synchronized Operation of Vacuum Cleaner for Improved Dust Collection
"Power Cutting Tool with Synchronized Dust Control Device"
Inventors: Suhak Auh and Charles Kim
Contact: Charles Kim [email: ckimson@gmail.com]
A friend of mine, Mr. Suhak Auh, has been involved with hardwood flooring for many years. His skill was so highly regarded that he usually was assigned to repair and correct problems/flaws made by other hardwood installers. While doing so, whenever his inventive mind kicked in, he thught about a better way to use his miter saw. Working inside and, usually, almost finished new home with new paints and all, was not very pleasant for the installers and repairers in many reasons. Making dust was a no no since flying dust could be attracted to the still fresh paint coats. Therefore, measuring inside, cutting outside, installing inside, and doing all this again if there was any error would have been the routine had it not helped by Mr. Auh's inventive tinkering. He solved this problem, by bringing in a vacuum cleaner (big size) and rigged it to the dust collection channel of his saw, which was originally designed for a small bag that lasts only a few cuts and not very efficient keeping dust inside the bag, and so he and devised, with electric circuits and relays, etc., an electric switch box through which the vacuum cleaner (much bigger one with extra collection bin with a long hose) turned on only when the saw was operating, and at the same time the saw switch was on. Also, we further improved the electric switch box so that, when the two loads (namely, saw and vaccum) were too big for a single outlet (which is rated usually at 15A) and thus frequently tripped off circuit breaker, additional electric cord can be connected to the box from another outlet so that two loads could be served by two separate outlets of 15A rated amps. See Fig. 1 below for details.
Fig. 1. New Electric Swithc Box
The home-made saw system following the invention, new rigged saw, was an instant success and attention gatherer. And with this new saw, he was the only installer allowed to measure, cut, and install inside. This was not all. His problem working under unlit room (this happenen often especially when the builder of the house did not provide electricity) only with flood or standing lights from diesel generator, under which the cutting line on wood piece was not visible even with the lamp provided with the saw. He needed a light which lit back-top of the wood piece, lighting the cutting area only, with no glare. So we improved and inveted this too. We rigged a hole on the bladecover of his saw, near the dust channel, and slid a lamp guide through the hole and fit a lamp inside the guide, which was wired so that it turned on only when the saw was operating. It worked perfectly. It actually eliminated the need of laser guide lamp for cutting line indication. The most exciting about this new lamp installation and the way it helps with wood cutting was that the light made a very thin shade of the blade and this thin shade made a cutting line. In other words, if the shade line and the penciled line on a wood piece aligned together, the the cutting on the line was perfect and square. See Fig.2 and Fig. 3 for details of lamp posit and the blade shadow-line.
Fig. 2. Saw with a lamp. Fig.3. Balde shadow line for cutting guide.
And, the invention was patented: US 8067916 "Power Cutting Tool With Synchronized Dust Control Device" Nov 29, 2011.
Enhanced Miter Saw With Embedded Lamp for Cutting Area Illumination and Electrical Circuit Means for Synchronized Operation of Vacuum Cleaner for Improved Dust Collection
Some pictures of the home-made system are shown below.
