1

I need a sturdy box with the dimensions 300x150x85mm. Since I cant dont have any expirience with the different Printingmaterials I cant decide how thick the walls should be.

Are 3mm enough or even 2.4 mm for printing in

FDM Nylon 12?

PLA?

or should i use 5 mm?
transportboxen.stl (59.6 KB)
transportboxen_3mm.stl (65 KB)

2

Probably ok for PLA which is pretty rigid. One thing to remember is to make your thickness a multiple of the extrusion width you plan to use. So, if you are using a .4mm extrusion width then make a wall that is a multiple of that like 3.2. Take a look at a cross section of the wall in your slicer to see if it is filling it in completely or leaving a gap. The wider you go on the wall the less important this will be since the area to fill will be greater - unless you use a lot of perimeters.

Just some guidelines!!

3

First, make sure you wall are a multiple of your nozzle width (usually a multiple of 0.4mm).

Second, thicker means stronger.

I have made some pretty solid constructions using my FDM-printers (my max. build size is 400x300x500 mm), but for large part that need to be strong I use walls that are at least 6-8 mm thick, depending on their free-standing length.

Remember, 3D prints are usually strong to very strong in the X and Y-direction, but weak in de Z-direction.

Thin walls (less than 4 mm) have no reall infill pattern if you use a 3-shell perimeter (1.2mm). Which mean a vertical wall can easily snap if you put stress on it along the horizontal print direction. If you wall are 6 mm or thicker, there will be at least some infill-pattern which.

Using enough infill is also important of course. All this has little meaning if you print thing with just 20% infill.

1 Like