Won't hurt you pull | handle | knob for cabinets & drawers | parametric

prusaprinters

<h3>What it is</h3><p>Sometimes a knob that sticks out isn't that practical. This model is literally the opposite. Modestly designed, flat and intrinsically flexible. It won't hurt or break if you bump into it. → Useful in confined spaces or to replace that one handle/knob that keeps giving you bruises.</p><h3><strong>How to use</strong></h3><ul><li>Dimensioning and custom modifications can be done via the attached Fusion360 or OpenSCAD file. Base is an ellipse, parametrically driven by the ratio of horizontal to vertical diameter.</li><li>The .stl file is a version for a 4mm nominal diameter tapered head wood or machine screw and has small flaps at 0.4mm thickness. If you want thinner flaps you could also just chop off the unwanted height from the bottom in the slicer.</li><li>Printing is very easy. Orientating at least one layer along the later pull direction gives the strongest flaps. Two color version is easy to get, just swap filament between layers.</li><li>Bending depends on the type of filament you choose. Many types will be ok if bent at room temperature. I just used the heated bed of my printer at 75°C to bend the flaps for a crisp result in the PETG I had.</li><li>Screw or glue in place.</li></ul><p><img class="image_resized" style="width:19.3%;" src="https://media.printables.com/media/prints/305197/rich_content/35071792-7f15-4e73-b9e2-e08097eecde1/flap_f3d_param.jpg#%7B%22uuid%22%3A%227a40ec5b-8cfa-4310-9a65-8ff86a86e4d6%22%2C%22w%22%3A2410%2C%22h%22%3A1808%7D"> <img class="image_resized" style="width:19.26%;" src="https://media.printables.com/media/prints/305197/rich_content/79d92add-fdb8-4ca8-b19c-073eaca5a1d5/flap_printing_orientation.jpg#%7B%22uuid%22%3A%22f6599f80-ac8a-442f-9603-6704c0daca07%22%2C%22w%22%3A1719%2C%22h%22%3A1290%7D"> <img class="image_resized" style="width:17.94%;" src="https://media.printables.com/media/prints/305197/rich_content/3b2cae42-f4f4-47e3-bbb5-bec6b8248fe9/img_20221029_134122.jpg#%7B%22uuid%22%3A%2267bfc491-5356-4fc3-9493-6744ef3bfe5e%22%2C%22w%22%3A3560%2C%22h%22%3A2842%7D"> <img class="image_resized" style="width:18.99%;" src="https://media.printables.com/media/prints/305197/rich_content/2787bff9-0b09-4faf-a59c-f7eaf12ad8be/img_20221029_135112ed.jpg#%7B%22uuid%22%3A%2239a34b8c-3a12-41e4-a954-9f13769f5cf8%22%2C%22w%22%3A2877%2C%22h%22%3A2158%7D"> <img class="image_resized" style="width:19.01%;" src="https://media.printables.com/media/prints/305197/rich_content/5976aee6-e855-4e92-b0b1-fd7cc62b5258/img_20221029_135646.jpg#%7B%22uuid%22%3A%22d4a9b0b4-c72e-4885-8936-b6be790f534c%22%2C%22w%22%3A2576%2C%22h%22%3A1932%7D"></p><h3>A word on the flaps</h3><p>The flaps work and hold up suprisingly well in PETG at just 0.2mm thickness. 0.4mm already feels quite sturdy and pulling a fully packed kitchen cabinet drawer is no problem so far. Of course the design has its limits and it isn't recommended for very heavy drawers, tank hatches and what not.</p><h3>What next</h3><p>I am planning to add a FreeCAD file later on.</p>