RUG/Pennsylvania/State College/Razor Blade Designs

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POST DESIGNS HERE NOW!!!!


Task

To design a holder for replaceable razor blades. These blades could be either the standard rectangular shape or the standard trapezoidal shape, as shown below. The design needs to be able to be printed on the RepRap 3D printers we have in class.

Razor blade rec.jpg Trapazoid blade.jpg


Brian's razor blade holder design

I chose to design my handle for the trapezoidal blade. I felt that the tab geometries at the top would make it easier to hold the blade in place. I chose a sandwich style design where two halves squeeze the blade in place. The halves are secured with a machine screw that runs though the middle of the handle. Below is a Solidworks rendering of my design.

Razor blade assambly preview card.jpg

This handle was going to be printed on a RepRap printer; ones we are current having warping problems with. That is why there are tabs along the outside edges. This table help hold the first few layers to the print bed until they cool. The tabs are only a few millimeters thick but are connected to the model with only one layer of material. This way the tabs can be easily removed and the holder can be printed without fear of warping. The two sides of the holder are not identical. There are a few features on the inner edges that cannot be seen in the picture above. There is an inset in one half that is just slightly larger than the features of the razor blade. The blade sits in the inset loosely but there is a tab on the opposite half that squeezes against the blade and prevents it from moving. To ensure this tab is always applying a force on the blade, two long tabs and two slots are on the inside

solidworks pic

real pic (if possible)

instructions to print

thingiverse