Since the Shark Guard was introduced in 2003, it has seen many variations and version numbers. This is an effort to preserve the history and help guys determine what model number they may have.
Here is an image of the first prototype.
The first version was of course, the 1.0. It was only available for BT 3000's and like saws and had a polished aluminum riving knife. It had a polished aluminum clamp with abrasive clamping mechanism. This was an all clear polycarbonate model. Most noted was the rear slot went straight back where the newer ones have a tail hook. There were also no clear rods in this version and no screws. Nothing yet powder coated.
1.0 to 2.0 moved from the all polycarbonate guard to aluminum tail parts. These were all initially polished up and they really did shine.
The upgrade from 2.0 to 3.0 was two changes to the polycarbonate or front part of the Shark. This is also when I started including the rods and screws used in all later versions. This was done to increase the dust collection capabilities. I am pretty sure this is also when I started powder coating everthing.
Version 4.0 and 5.0
The upgrade from 3.0 to 4.0 deals only with the clamp and splitter. The splitters are now made from .090 steel sheet. The splitters no longer have the slots on the top. Now they simply have two tiny holes in which steel pins lock into. The clamps are changed by omitting the Big Dog tabs on the bottom and side. These clamp extrusions had plugged ends, stainless steel pins and set screws to adjust for the thickness of the splitter. The upgrade from 4.0 to 5.0 had a radiused leading edge on the bottom of the clamp halves and the option to have a 2 1/2" OD dust port or the older 2"OD. Version 5.0 started shipping on November 17, 2004.
The upgrade from 5.0 to 6.0 deals specifically with the clamps only. This clamp was more versatile. The clamp effectively has moveable bushings that will allow you to move the blade and splitter more to the right of the guard. This reduces the minimum ripping width from about 1 1/4" or so to about 3/4". This is using a thin push stick like I offer. Click on a thumbnail to see how the bushing placement will change the position of the blade under the guard. This was soon changed back to solid bushings in version 8.0 and is no longer available. It wasn't possible to use this with version 8.
The change from 6.0 to 7.0 is to the clamp only. I simply added another steel pin to the clamp to enhance its strength. Its really just extra protection and strength for the hold down feature of the clamp. It also made it impossible to install the clamp backwards.
The 7.0 to 8.0 was a pretty significant change. It eliminated the aluminum tail portion of the guard and went back to an all polycarbonate guard. This made them stronger.
During the 8.0 version cycle, I added the tail hook safety latch to the rear and also experimented with an extra replaceable shield up front. I quit adding these shields due to dust settling in between the two parts and getting clouded up. I was also able to offer larger dust ports on these. I think I started adding 2.5" during the 5.0 or 6.0, but 4" came about in the 8.0 model. These were called 8.4's.
During the 8.0 version's cycle I started designing and producing Whale Shark covers. These were direct replacements/upgrades that fit some existing models of over arm dust covers. In all cases, these out preform the original.
March 21, 2008
The version 10.0 and 10.4 changes
Well, the 9.0 models lasted almost two years missing by about two weeks. As of March 08, 2010, all guards shipped were version 10. This update deals mainly with the clamps and pawls. Sadly I can no longer make these without a spring load on the design. It was a recent occurance that a slight design change had made some of the pawls only work sometimes at some heights. To get a better and more consistant product safety wise, I designed this version. Here is a link to the installation instruction for the newer Anti-kickback pawls.
The version SGK1
The SGK1 made a switch to a more modular guard. All bolt together so replacement parts can be swapped out instead of buying a whole new cover. The dust ports were still hand formed from tube. The SGK1 started shipping at the end of May, 2011 up until Feb/March 2017.
The version SG3D
The SG3D was the same as the SGK1 except that it incorporated a few 3D printed parts. The dust ports, tail plates and tail hook latches were 3D printed. This meant that we could redesign a few things to make them stronger. The dust ports are now more consistantly fabricated and more efficient due to a larger opening at the guard on all dust port sizes. It also meant that we no longer have a size limitation and can print virtually any size dust port that you need. Another plus side is that the 3D printing insures far less material waste than what we were seeing before. A leaner greener approach for sure. The SG3D also switched from a single aluminum tail hook design to a double tail hook made from stainless steel. Much more positive security on those. The SG3D started shipping Feb/March 2017.
The version SG3D SS
The SG3D SS version just switched from a 3D printed latch for the double tail hook to a stainless steel latch. We did have a few of the printed latches fail if the adjustment was not correct or too much pressure was applied to open it. A stainless steel latch was a much better choice and gives a satisfying snap when the tail hook is closed. The SGK1, SG3D and the SG3D SS have all interchangeable parts meaning that you could easily upgrade an older SGK1 to the current version if you wanted to. The SG3D SS started shipping December 2017.