At my house we have lots of flashdrives everywhere. So i made a 3D printable USB holder to gather them on the desk.
Step 1: Draw a Triangular Base
First, draw a triangle with a straight angle.I made the base 30 mm, the other sides will automatically have the same size (21.21mm)
Step 2: Extrude the Shape to 100 Mm
Extrude it for 100mm and rotate it.
Step 3: Draw the USB Fittings
Add a rectangle with the size of 4.5mm x 12mm to the sides, this is the size of a USB.
Step 4: Extrude the Rectangular Fitting for 8 Mm
Extrude the rectangle for -8mm, the USB will certainly fit in.
Step 5: Repeat on the Other Side and Use "pattern"
Do the same on the other side and with the tool "pattern" you can repeat over the entire length of the base.
Step 6: Use "fillet" to Smoothen the Edges
With the tool "fillet" you can smoothen the edges and finalise the USB-holder.