Llap Goch said:
I think that the Crown moulding fence slots onto the V on the saw table side and uses the spare bolt holes either side of the rubber feet holes. There is a knob on the underside of the Crown moulding which I suspect tightens the fence to the saw table. I do not know how the alu fence then attaches to the Crown moulding fence.
From my understanding of the photos and diagrams I have seen, assembly goes something like this...
The Kapex has two V grooves at either side of the table:
The Crown Moulding Stop assembly (AB-KS 120) fits into these grooves. This item is essentially a grey metal plate which widens the table (also called a Table Widener and Bracket Support Bench), plus a movable black fence which slides front to back in a T-slot. The black fence keeps the base of the moulding from slipping forward:
The Crown Moulding Stop assembly is described in the Kapex brochure as:
Crown Moulding Stop AB-KS 120. Fence for positioning crown mouldings at an angle, also used for securing the table extension KA-KS 120, 1 crown moulding stop with table widener. Order No 494369.
Once the black fence is located in the T-slot, crown moudling can be held in place with the assistance of the black screw clamp:
The Crown Moulding Stop assembly has a dual purpose however - it is also used to attach the Table Extension (KA-KS 120), which is described as follows:
Table extension KA-KS 120. For attaching workpieces and precision cutting to size, connected to the KS 120 via crown moulding stop 494369, can be used on the left or right, total length 1280 - 2070mm, cutting length 380 - 2300 mm, scope of delivery: stop flag KA-AR, fence, measurement scale, adjustable legs and workpiece support surface. Order No 494354
A photo showing the Table Extension attached to the Crown Moulding Stop assembly is shown below:
The end of the Table Extension sits on top of the Bracket Support Bench part of the Crown Moulding Stop assembly, but how are they secured together? Note the large black knob mounted at an angle under the Bracket Support Bench, and the smaller black rotary knob mounted on the top of the Table Extension, just above the T-slot of the Bracket Support Bench. The former attaches the Bracket Support Bench to the Kapex, whilst the latter secures the end of the tape measure you can faintly see running along the top of the Table Extension. Neither of them play any part in securing the Table Extension to the Bracket Support Bench.
Instead, the two are held together by a slot nut which slides into a groove on the bottom of the Table Extension extrusion, and is held in place by a rotary knob, which is tightened from below the Bracket Support Bench, and is invisible in the photos. The following diagram is taken from the instruction manual for the Table Extension (the slot nut is 4.5, and the rotary knob is 4.4):
As to attaching third-party table extensions, you may want to purchase the AB-KS 120 Crown Moulding Stop assembly from Festool, and drill into that instead. You could semi-permantently attach the third-party table extension to it by using bolts, and then fix the Crown Moulding Stop assembly (with its attached table extension) to the Kapex by using the approved large black knob. This would allow very quick attachment and detachment of the third-party fence, and would leave your Kapex totally unharmed, since you'd only be modifying the Bracket Support Bench part of the Crown Moulding Stop assembly. The latter costs 56.50 GBP from
Miles Tool and Machinery Centre, and would not reduce the resale value of your Kapex.
This is probably a rather OTT answer to a simple question, but I wanted to explain it as clearly as I could.
Forrest