NordicCNC's build log

[JAZZCNC]

Ermm to me by arranging the profiles at the top of the 160 side pieces your wasting 80mm of height that could be used to lower the gantry height and increase stiffness or keep as it is and gain clearance.
The gain in having the motors under the bench isn't worth wasting stiffness, also moving the motors to the outside will shorten the belt length.

Also, the slightly elevated sides put the rails up higher and stop debris from hitting them directly and building up against the rail.

[NordicCnc]

Ermm to me by arranging the profiles at the top of the 160 side pieces your wasting 80mm of height that could be used to lower the gantry height and increase stiffness or keep as it is and gain clearance.
The gain in having the motors under the bench isn't worth wasting stiffness, also moving the motors to the outside will shorten the belt length.

Also, the slightly elevated sides put the rails up higher and stop debris from hitting them directly and building up against the rail.

Those are some extremely good points..

By moving the motors to the outside of 160x80 profiles, the belt lengths will be shorter and I will be able to move the 80x80 profiles down 80mm. This in turn will decrease the needed height of my gantry sides by 80mm while also protecting the Y-axis rails.

There is no doubt, I will make those changes. Maybe I could even change the sides to 200x80 and be able to make the gantry sides even lower! Now it starts to turn into a raised gantry design. The drawback will be that it becomes more difficult so access the machine table from the side, when e.g. fastening the workpiece.

Thanks JAZZ!

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[JAZZCNC]

The drawback will be that it becomes more difficult so access the machine table from the side, when e.g. fastening the workpiece.

Yep there's always going to be some trade off with design like this, you just have to decide which is most important to you.!

[NordicCnc]

Yep there's always going to be some trade off with design like this, you just have to decide which is most important to you.!

Yes.

If I think about it, side loading would not be too complicated with only 200mm raised gantry sides. You can still reach for all the clamps quite well and large wooden sheets can be loaded from the front.

The purpose of the high gantry sides was exactly for that reason, to simplify side loading. But now when analysing the problem closer, this will probably not have any impact to me at least.

Time to modify the design... again!

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