welding steel base or just getting aluminium extrusion

[driftspin]

Thanks guys, just would like to ask a question that i can't seem to find the answer to on the forum But has anyone ran a machine for multiple years using epoxy resin without it weakening over time? also what methods do you do to get top and bottom rails lined up to exact same position?



Got my keys today for my workshop so will be cracking on soon :)

Hi reefy86,

I would like an answer to the epoxy question to :-)


For Y rail alignment?

I used 2 extruded profiles across the x rails in front of an behind the gantry.

And 2 across on top of them, parallel to the x rails under the gantry.

Now you have 2 flat references to put 2 machinist squares on. in a horizontal/ upright position on both sides of the gantry.
In the same X rail level plain.

The bottom of my gantry is half raised 12+ cm over the X rails.

I moved the rail so the carriages are just over the edge of the beam so it is close as possible to the Z axis side so the machinist square just touches them and not the gantry box section.
The rail is on the edge of useable flat of the epoxy.

Hope this helps.



Some left over extrusion 8040 goes a long way for alignment purposes.

I did check them for resonable straightness before using them this way.

You need square and flat references all through the build, i did under estimate this.

If not for epoxy this would never have worked out for me.


Grtz Bert


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