These are custom made linear rail milling jigs for a router, both sets of rails are "supported" 20mm thick, meaning the 20mm bar is mounted onto an aluminium support this gives zero flex on them even when a heavy router is fitted, these are essential to achieve a flat surface without any dips caused by the bars bowing in the middle.
The size advertised is 1200mm for the bottom rails and 1200mm for the top rails this gives an approximate workable cut of 950mm x 950mm
This jig can be made up to any dimension that’s required but the maximum I would recommend for the top rails would be a set of 1500mm, for the bottom rails any length can be achieved by adding additional rails end on end to each other.
The rails can also be interchanged from the top to bottom and vice versa this can increase the versatility for different sizes of timber that may be required please contact me with your dimensions and I can get a price.
The router carriage plate will be set with approx a 60mm clearance, and with the design of the carriage being set to just above the height of the lower rails means you will get nearly full use of your routers plunge just minus the 12mm thickness of the polycarbamate
if you require more than the 60mm clearance simply raise up the bottom rails to give you a greater working height.
The base plate is made from 12mm clear polycarbonate, so it won't crack, shatter or bow under load and has an M10 bar threaded and glued into it. The centre cut out hole is 75mm in diameter this is enough for any of the large milling bits. Please note: you will need to mark out yourself the holes to fix your router to the plate, I found the easiest way was to turn the router upside down and mark with a pen where the holes were (see last pic)
The base plate measures 250mm x205mm and with the 75mm centre hole, it is designed to suit the larger 1/2" routers capable of using the larger planning bits so not suitable for the small 1/4" or palm routers. However, I can supply a subbase that has a smaller centre hole suitable for smaller routers, this is fixed to the main base via m6 screws and can be removed when not needed, this gives flexibility for different routers and is sold separately. Please request this item upon purchase otherwise no fixing holes will be drilled.
I don't know of any router model that would exceed these dimensions but please check your own to make sure. and also, your router fixing holes are not going to fall inside of the 75mm centre hole.
An important safety note: I would recommend using the rail stop collars supplied with the jig as they will prevent the router running off the ends (x axis) and more importantly to prevent the router bit coming into contact with the bottom rails when you are moving it across the top rails (y axis) a set of 4 will be supplied, one placed on each alternative end will cover all ends.
These can also be used to lock in the carriage if trench/rebates cuts are needed to be made, an additional set of 2 collars would be needed for this and can be supplied as an extra item.
I can also supply a 1/2” shank flattening bit if needed, it has a 60mm diameter cutting capacity and has rotatable cutters, these are great as once they start to dull, they can be removed and rotated and with the additional set of cutters you are effectively getting eight router bits in one.
Postage, I don’t keep the rails in stock I order these as required as there are various lengths to choose from so they are ordered in on specific requirements so please allow an extra few days for shipment.
Additional items sold separately…
1/4” router subbase - £20.00
Stop collars (pair of) - £10.00
1/2” shank milling bit with 3 extra cutters - £59.50
Replacement bearing blocks (4 of) - £20.00
And please note the routers are not included...Also i don't sell just the carriage alone, the set up comes as a complete kit.
Any questions please feel free to contact me
eBay doesn't allow external links so please email me on ianrook1 @ yahoo.co.uk (ignore the spaces) and I can send you a link to a Youtube channel that shows how its set up and milling a slab