Mk2 extrusion router

[RobC]

Hi Clive, I'll be pretty much dismantling the bearing supports and hoping to have the bearings push fit into the end sections of the aluminium plate If all goes well. I'm not too sure if that would then change your decision on what size extrusion but silly me meant 16mm screws as I'll be re-using my current ones and plenty spares. Cannot wait to get away from the terrible sbr stuff, had a nightmare of a job chasing ball bearings around the place. I'll be going for two on the X, one on each side section and one on the Y.

[Clive S]

Hi Clive, I'll be pretty much dismantling the bearing supports and hoping to have the bearings push fit into the end sections of the aluminium plate If all goes well. I'm not too sure if that would then change your decision on what size extrusion but silly me meant 16mm screws as I'll be re-using my current ones and plenty spares. Cannot wait to get away from the terrible sbr stuff, had a nightmare of a job chasing ball bearings around the place. I'll be going for two on the X, one on each side section and one on the Y.

Ok Rob It would be a good idea to get something in cad. Not sure what you mean by "push fit into end sections" as you will at least need a bit of wiggle room

[RobC]

That's the reason for me asking on here regarding extrusion size as I need to know that before I proceed onto the whole drawing up in fusion. An image here to show what I mean by push in on the ends. http://i.imgur.com/yajSuNI.jpg

[MikeyC38]

Hi RobC

I don't think you need to mill pockets in the end-plates for your router frame. See my build here. Just use sturdy section extrusion (I used 80x40 heavy gauge 4kg/m ) with extra aluminum strips under the supported round rail. It is plenty rigid enough when bolted up with M8 screws into the ends of the extrusion. Like others have said do a CAD drawing so you can be clear in your thinking and express clearly to others what you are trying to achieve. A picture always tells a thousand words....

Regard
Michael

[RobC]

Hello Michael, I'm still trying to decide really as the extrusion from mcmastercarr in fusion360 is not the dimensions it says it is as its 0.200mm out and it's messing up my designs so I think I'll have to order the extrusion and then measure it to check then go off that figure in cad.

It's not too different from my current build what you built, just slightly different gantry design.

Rob

[Clive S]

Hello Michael, I'm still trying to decide really as the extrusion from mcmastercarr in fusion360 is not the dimensions it says it is as its 0.200mm out and it's messing up my designs so I think I'll have to order the extrusion and then measure it to check then go off that figure in cad.

It's not too different from my current build what you built, just slightly different gantry design.

Rob

Rob
I would use a British extrusion drawing (or metric) as it might be different than from the USA

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