Adopted Build - my first CNC router

[mike os]

Got a little bit done this week, finding it helping with my rehabilitation as I need to use both hands for most of it

28 m16x50 holes tapped, 48 m8 tapped holes for the rails, all by hand as the company that did the original machining "forgot"... thanks for that



test assembly... I now know the approximate size is 2m x 1.1m between rails, and first problem... one of the cross rails is drilled about 2mm out, still thinking on how to best fix that, any suggestions gratefully recieved




nice chunky assembly, 160x30mm plate

[routercnc]

Interesting machine

The cross rail being drilled about 2mm out- if I understand correctly then I think you need to slot the through hole. If you don't have a mill then you may be able to use a router and carbide bit or pillar drill with counterbore bit plus some filing.

[mike os]

Interesting machine

The cross rail being drilled about 2mm out- if I understand correctly then I think you need to slot the through hole. If you don't have a mill then you may be able to use a router and carbide bit or pillar drill with counterbore bit plus some filing.

not an ideal solution, but I think it will be adequate, there is a 3rd bolt for each end from underneath so plenty of fixing, and the counterbores are going to be covered at some point with something to keep the ballscrews and rails clean

[EddyCurrent]

What about filling the holes with stuff then drill new holes.
https://www.machinemart.co.uk/shop/p...inium%20repair

[mike os]

I would worry doing it that way eddy, as the new hole would mainly be in the filler... and is 50mm deep

only alternative is to drill out to about 24mm tap & plug, pin it and then redrill & tap.... but holding this vertically to drill will be a right pain.

think it will end up on the inside and ream holes to suit in the side rails

[Boyan Silyavski]

i would use a propane torch, melt some aluminum and pour it in the hole. then machine it again. i have done it, it works. 15 min fix.