For the table of the router I found interesting aluminum profiles on www.damencnc.com/en/components/aluminium-profiles/isel
The maximum width one of 370 mm would nicely fit my router design, but for cost reasons I decided to choose for a similar, cheaper solution as in the neo7cnc design.
On marktplaats.nl I found a vendor that sells small remainders of tooling plate aluminum for an affordable price, one of which 340 x 470 x 15 mm .
It’s a bit smaller than my maximum range, but 34 x 34 cm is OK for my applications and from the remaining piece of 13 x 34 cm I can create some connecting plates.
For fixing the workpiece to the aluminum table 85 holes with M5 thread are planned (in a checkerboard pattern of 7 x 7 and 6 x 6 at 5 cm interval).
To make this easier I decided to make a temporary 18mm MDF table first so that I could use the router itself to drill these holes.
As the top of the linear actuator of the y-axis is lower than the attached stepper motor it’s required to add spacers between the actuator and the table so that the table can move over the motor.
When the V-slot beams and gantry plates finally arrived I could start building. Originally my expectation was that I would need diagonal support beams for stability of the vertical portal, because the Y and Z axis linear actuators and milling motor are quite heavy.
But the combination of double slot V-slot beams and angle corner connectors with 90 degree joining plates make a very rigid construction.