Thank you very much for all suggestions.

I do aware that Moi3D can run smoothly even on an old low spec. However, I would like my niece to be able to advance later into much more complex 3D models so that maybe a higher spec laptop would secure the need. I'm looking to several gaming laptop now which still suitable to the budget.

Cheers.

That's a very nice setup, Pilou !

Moreover if it was a touchscreen, then we can access all tools more easily.

A touchscreen is in many cases counterintutive for Moi3D but not for Apps!

A professional method that the "big guys" over there is to use a num-pad.

Its a generic USB-tool with a tilted edge that you can script at your command.
Because if you have a downward screen you block the right arm.
Which takes energy and focus.

With a numpad (with tilted edge) you can freely use your
left arm to program the necessary Moi3D-functions!

Like add edge /boolean /substract /simply the working curve.
Or speed it up a notch!

Ex: usage of Num-pad. (the black thing on the left of the screen, besides the laptop) under the yellow-arrow.
The monitor below uses SpeedCrunch which is in my opinion a superiour calculator for CAD/CAM as for now...

1.Add point
2.Delete point
3.Reconstruct
4.etc,etc
5.
6.
7.
8.
9.

This is a custom-made Num-pad tilting block made of wood.

But there are pre-made of this kind, but they are very expensive.
But well worth the investment because of the less strain
on wrist and fore-arm work.

You can offcourse program it to do much much more!

Like: Using the Enter on the numpad, together with the numeric numpad (that also works as a keypad).
For example.
You want to change the diamter, you simply use your left hand to alter the values,
and then confirm the change with enter.
Supersimple, and superfast.

You work much more efficient this way (i believe)...

But whait this is even more.
With the other monitor (main monitor)
you can use a calculus program at the same time (not the same time as Moi3D)
but switch to another calculus, ex i use SpeedCrunch 0.12 which is an excellent calculator.
It has all the variations you put in it (with Num-Pad device) in the rows, so you can easy follow
if any value is off by 0,01 or more...

So i use the Num-Pad for both usages, both as a value-device, alterer i Moi3D
and as a speed-crunch number in the other monitor.
Very, very handy...