GFRC Concrete Fountain
- OnShape
- Integrity Powerblend
- Lulzbot Mini II
A small concrete fountain
- Jeff's class -> want to put ideas to the test
- Cat fountain excuse
- Design
-- Love mixed materials Metal + concrete -> half copper pipe. -- Shape very much dictated by the form I could build with my limited tools (angles were out). -- Form built with a mix of 3D printed components and a melamine shell --- Melamine exterior --- 3D-printed TPU component used to create the cavity in the top and to aid in aligning the copper tube. --- PLE component use to create the inner cavity for the pump and for positioning pipes for the water inlet, water outlet, and electrical cable. -- Material: Glass-fiber reinforced concrete with Integrity PowerPack and a healthy dose of Integrity Ultraflow superplasticizer.
- Lessons Learned
-- Calibrate your tools - square cuts are everything. -- Use the right silicone -- Embedded metals need some more mechanical bite -> should have glued some some strips to the side to lock it in place.
Whenever I'm tempted to trust in my inner Homo economicus, I can look back on this project as a sober reminder of just how readily reason defects to the service of Homo ludens and Homo faber. Why would we spend $20 to buy a fountain for the family cat when I could make one instead? Several months and more than $20 later, reason's duplicity was painfully apparent.
To be fair, I had just taken Jeff Girard's "Creative Concrete Mastery" class and was itching for an excuse to put what I had learned into practice. I had also just been introduced to Caleb Lawson's work and, inspired by his use of mixed materials, wanted to try a design with exposed metal. The design's shape was determined largely by the casting forms that could be constructed with my limited tools (and skills). Angles were out, requiring miter cuts with an accuracy beyond the reach of my makeshift track saw. The result was a simple, rectlinear, semi-brutalist design - a fitting monument to the little feline tyrant for whom it was created.
[CAD Rendering; Sketch with Golden Ratio?]
The form comprises a melamine shell and a handful of 3D-printed components that create the cavities. I used a flexible TPU filament to print a part that creates the visible pocket on top and aligns the copper pipe.
