Fixed or stationary fence,(copied by many but never perfected) which is at all times parallel to the blade, will never flex or yawl. You can have heavy and sustained upward pressure on any hold-down devices without any lift up of the fence. Any side pressure or bumps on the fence (heavy ply or MDF board) will never make it deviate, clamping pressure is applied all along the front edge of the table saw not levered against a front rail. Most safety and anti-kickback devices are placed up front and over head of the cutting tool or blade from the rock solid fixed fence. Can handle 4*8 sheet material to 4 ft on centre of the cut with only 12.5 sq.ft of support platform area, eliminating the need for large permanently mounted out feed and side tables also the requirement for 60lbs of steel of a t-arm system which is certainly not portable. The OJJ weighs in at about 24 to 30lbs, removable, portable from the shop to on site with the same accuracy, does not require to be set up level, adapts to any saw, large, small, new, old or bench-top, many poo at the thought of a wee bench-top being able to, you know what. The OJJ'S simple technology suggests otherwise, The unique apertured support platform can have the additions of many other cutting tools attached to a spare insert and slide inside the said aperture and used in conjunction with the stationary fence.
http://www.youtube.com/profile?user=seumas2
"Nothing will help with carelessness. But someone who has NEVER read or been around/taught any idea of shop safety, is more prone to accidents then someone who has a basic understanding of the tool functions. When one doesn't have an idea, that wood can have defects in it, one tends to go blindly in.
Even Push sticks and idea's like the OJJ (Seumas's design), help to keep ones hands further back." quote from woodworker
$10.00 USD for the OJJ plans
Buy the plans for the original jimmy jig, and you
get the PIGGIE-BACK/with the OZ down-under table-saw (both by e-mail after purchase) with the ORIGINAL JIMMY JIG for free that make the
consept the safest table saw period, blade or cutting tool covered on all sides, top, back,
front. all aspects of safety being covered
The PIGGIE-BACK/OZ a Scots innovation has two fences one left one right and an added half
fence, easily removed, front and back 24in. long adjustable hold-downs, innovative
banding material hold-downs. Regards safety nothing comes close.
Don't be complacent !!!! spend $10 and eliminate/dangers and the fear factor
the stationary box Fence
support platform
How to line up a fence
Isometric plan views
zero clearance inserts
clamping device
auto-hold-in device
auto-hold-down device-to scale
outrigger-eliminating side and out feed tables
split router fence
cross cut sliding sled
over-head see through guard
compound-mitre and cove jig
preventing the deadly kick-back