Practical Print: Chip Clip

We all love snacks (and let’s face it, quarantine snacking is real)! But there’s something so disappointing about reaching for a chip and expecting that satisfying crispy snap and being met with a flat stale chip. Announcing: the chip clip, here to save the day!


Now you can definitely go out and buy a set of chip clips, but what’s the fun in that? Printing your own gives you the freedom to customize it, and it’s just fun!


The Model

There are lots of models around that you can find (using Thingiverse is super handy). Today we’re going to be using this model by Srwilson58.


We chose to use this model because it uses the innate ability of the plastic to flex as the mechanism for holding the bag closed. The clip is also robust in that it can be flexed multiple times over, as the elasticity of the material is higher when the strain is placed perpendicular to the pattern in which the material is laid out (as shown in the below photo). This is important for us to know because as the clip is flexed to open, the stress points will bear the brunt of the torsional strain and thus be the most likely areas to fail during use of the chip clip and we want to reduce chances of failure or breakage if possible.


To prepare our print, we are using PrusaSlicer to slice the model. An issue we did run into during the slicing process was we noticed a few “artifacts” leftover from the original STL. These “artifacts” show up as random blotches within the layers and can affect end-use quality of the print. As you can see below, the “artifacts” were going to cause part of the hollow channel to be printed solid, and not allow the clip to flex and open.


In this case, the first fix we tried was a simple use of the slicing software’s internal mesh repair service. However, the artifacts were not removed when we did that, so we simply removed the top 5 layers of the STL so that the slicing software would no longer include the layers with these pesky artifacts. Now the slicer shows the printed model looking like this:


Now that we’ve fixed those artifacts and have our printer settings (Nozzle temp: 220, Bed Temp: 100, print speed: 60 mm/s, fan 20%) are established for CLP Party Pink we are now ready to print this chip clip!


Printing

Since we are printing with a textured bed we do not necessarily need any bed adhesion solution, however, you can use something like Magigoo to help HIPS parts stick to the bed during printing. The print took around three and a half hours and it came out great and is super useful!


Check out the printing and usage below:


If you decide to print your own chip clip with your very own U-HIPS filament, we'd love to see it! Be sure to tag us on Instagram at @closedloopplastics or tweet us on Twitter at @CLP_Filament!


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