CNC Shark Forum

Just a quick update on my shark's flex measurements. I finished an aluminum router mount assembly to replace the plastic factory unit. The new one improves rigidity of the unit, and the new flex measurements are as follows. Measured at router bit tip with 1 lb of force, router centered on tabletop. ...

I used 1 1/2" aluminum angle as "ledger boards" and mounted 1" thick x 3" wide x 36" long "1030" extruded bars to form a table top. The pro plus uses a similar extrusion that is slightly thinner. each section can be individually shimmed if required, and the angle is bolted to the machine frame at nu...

Based on Jerry's experiment, I did some quick measurements on my modified shark pro, and came up with this: Method: router position at center of table x and y with bottom plate of router mount assembly even with bottom plate of z axis "bearing box". A 1/4 inch dia rod extending 1.5 inches down from ...

Bob Ungemach
Sarasota. Florida 34229

Hello John I second what HJ has said in that it would be very good for the factory to produce a set of assembly and alignment instructions to be sure the adjustments that can be made are made in the correct order. The machine may be secured down to surfaces that are not exactly flat, and that can al...

Hello John I am wondering if your machine is too far out of square to be able to use the "plane the sacrificial board method" with good results. Since you have a dial indicator, I would suggest that you make a small plate to be able to mount it where the router usually sits with the indicator shaft ...

The bearing rods are the same size as the original shark pro, 20mm dia. I cut the new supported ones to the same length as original. The rods are supported their entire length by the support extrusion that is bolted to the rod. As the new rods are the same dia as original, I used the original hole l...

Hello Bobby You can see the x axis bearing rods flex if you push or pull the router shaft forward or back. That also tends to lift the router bit up a little as it flexes around a center point between the bearing rods. A modest forward pull on the router mount would raise my bit by 15 thousandths or...

The shark pro I have was a bit off in squareness also, and I had done the same process as Bobby outlined. To get a flat table I used 80x20 extrusion material which is similar to the extrusion used on the new pro. Their 1030 extrusion is 1" x 3" with slots. Ten 36" lengths worked out fine for my shar...

I fabricated new corner brackets similar to what Tim and James suggested. My original corner pieces were 3/4 x 3/4 inch. My new corner pieces are 3/4 thick plate by 3" at the lower wide point by about 5" high. This allows the gantry to move up the equivalent of two holes ( in one hole increments) wh...