Pro-Tech - Dado Set - 230mm x 15.88 x 24T 4 x 1/8" 3/32"1/16" Chip 27.5mm - Pro-Tech - Dado Set -...

How to assemble:

Ensure the saw is switched off and unplugged wheninstalling or removing the dado set from the machine.

The table saw's arbor must be clean and free of any materialthat could get caught between the arbour washer and theblade face.

Both sides of every blade, chipper, spacer, and shim mustalso be cleaned before they can be installed.

The two outer blades have bevelled teeth alternating withflat topped teeth. The bevelled teeth will form the shoulderof the dado, slicing cleanly across the grain of the wood. Theflat-topped teeth will square out the bottom corners of thedado.

It is important that the bevels are running down towards theinside of the stack like in the photo below. If they are put onbackwards, the corners of the dado will not be cut.

Depending on the width of the groove, rabbit or dado thatneeds to be cut, select the correct size chipper/s and shim/s.The total width of the outer blades, selected chipper/s, andshim/s, i.e., the total dado stack should be equal to thewidth of the groove, rabbit or dado that needs to be cut.

Start by installing the left outer blade against the arborwasher of the saw. If a shim is being used, this will go onnext, followed by one of the chippers. The chipper's teethshould sit between two teeth of the outside blade and notbe touching them. The teeth are wide enough that theyoverlap one another, so be sure there is no contact betweenany of the blades.

Add a 2nd shim (if necessary) and then another chipper,followed by another shim and chipper, depending on thetotal width of the cut required. Stagger the chippers so thatthey are an equal distance apart. This will help balance thedado stack and prevent any vibration from too much weighton one side.

Lastly, the right outer blade can go on. Try to line up thebevelled teeth side by side so that it is easier to get anaccurate measurement with the calipers after the completestack is added together.

Tighten the arbour nut finger tight at this point and rotatethe dado stack by hand to verify that there is no contactbetween the teeth. Once everything looks good, tighten thedado stack firmly with the arbour wrenches.

Tips for using shims:

• Shims allow you to fine tune the width of the dado set soyou can get as close as possible to the size you need, usuallywithin a few fractions of a millimeter. They can also presenta few problems.
• Because they are so thin, they tend to fall into the threadsof the saw's arbor and prevent the stack from closingproperly when tightened.
• To prevent this, add a couple of drops of light machine oilor WD40 to one side of the shim and then center it on theblade. The surface tension keeps the shim from falling intothe threads of the arbor.
• Even though there is quite a bit of overlap between theteeth of the chippers and blades, stacking too many shims inone place can push the teeth far enough apart to leave anarea of your workpiece uncut. When using a lot of shims, itis best to distribute them evenly between the dado blades.

Once the dado blade is locked down, it is time to make a testcut in a scrap piece of wood, to see where you are at. Makesure you use push pads or a feather board and a push stickto run the stock through the blade.

The more you use your Pro-Tech dado set, and the morefamiliar you get with your table saw, the faster and moreprecise your work becomes.