GOLDYLOCKS Whistle

GOLDYLOCKS Whistle There are lot of whistles out there. Likely you've printed a few. Maybe even more than a few. If you're searching that one special whistle with just the right sound in just the right size it's not easy to find. That's what Goldylocks Whistle is all about. It's not one whistle but a collection of five whistles in five sizes in five pitches. Each whistle delivers a rich, resonant lower note for its size. A full sound carries farther. The series starts out at a medium whistle size of 55mm (about 2") and steps down to a tiny 27mm whistle. That's a very small whistle. To find the one that's right for you, print out all five. Give them a try and pick the one that's just right. This is a one note whistle that delivers a sound that carries a long distance. Despite their small size, the sound Goldilocks whistles make is sharp, LOUD and distinctive. Goldylocks Whistles come in five sizes: 55mm, 44mm, 38mm, 33mm, and 27mm long. Fun fact: It's not as easy as scaling. Whistles do not scale well. A fraction of a millimeter in any direction and they won't work. So, all Goldylocks whistles are designed, tuned, tested, and optimized for its final size. That gives you five to choose from. Whistles are a handy tools. Carry them in a pocket or purse, attach them toa bag or backpack or hang around your neck or wrist with a lanyard. More Whistles Too many whistles and more on the way. I'm a designer and, going with the flow for now. Want to 3D print more whistles? See my whistle designs in the WHISTLE WORKS collection... https://www.thingiverse.com/timcel/collections/43888798/things Other variations may be added in the future and I reserve the right to make this thing better in any way, anytime or to make it go away. The bottom of this description has links to other whistle designs Why Whistles? Different whistles. Different tasks. These whistles have an intense, distinctive sound. These whistles make excellent safety and warning whistles.As 3D printer owner you're a manufacturer. So, make lots of whistles to share with friends, family and your community. They make great gifts. Whistle Design As a designer, I frequently use 3D printers for design development and prototyping. The goal for this project was to create a whistle with a rich, full, distinctive sounds that 3D prints well and can be customized. Being a simple device, I assumed whistles would be easy. Wrong. Turns out designing a good whistle is hard. Probably one of the reasons I like it. Dozens of prototypes and weeks of development went into creating, testing and refining designs. The tone is sharp, full, distinctive. Unlike many 3D printed whistles, this one works with medium and the infuser is designed to compress and enhance high pressure blowing. WARNING: All whistles are very loud. 105db - 110db. For comparison, a rock and roll concert can be 85lb-100db. Rolling Stones and heavy metal concerts a bit louder. So, be careful how and where you use a whistle and always be aware of how close you are to others when using one. Whistles may be a great warning tool, but use them responsibly. Pro tip: wear ear plugs or ear phones or other form of hearing protection. Printing You've been waiting for the right time to use that shockingly bright filament you've stashed away. It's time. This is a safety whistle. Make it bright! This whistle is positioned to print on its side best print quality on the critical fipple, window slot, and a clean sound chamber. Printers used for testing Prusa XL, Prusa Mk4s, Prusa Mini, Bambu X1C, Bambu Mini. There are no reasons any well tuned modern printer won’t print whistles. Basic Settings Rafts: No Walls: 3 Resolution: .15 or .16 depending on your slicer Infill: 15-20% Use a .4 nozzle. Smaller nozzles are not needed. Slow speeds down. Particularly first layers, outer walls, and top surfaces. Prints on its side not on the bottom. So that means a small surface area is touching the print bed. A smooth plate and bed adhesive really help. If your prints get knocked off the print bed try a brim. The 33mm and 27mm whistles are very small and may need a brim. If you insist on printing on a textured plate and your prints get knocked off, add a 5mm brim to all sizes.. Notes Don’t assume this just another print and use your default settings. This whistle is small and needs special attention. Plus, whistles are challenging to 3D print. See notes below. Printing Techniques Printing small 3D models successfully requires a different approach. Because these models have a lot of vertical mass for their small size and a tiny contact area they can easily get knocked off the plate. So, I recommend the following… • When printing small models start with a clean, smooth plate and use bed adhesive • Slow things down. When printing small items, slow first layers, top layers, and outer walls. I usually run first layers at 30mm to insure a perfect first layer. PLA The model was designed to be printed with inexpensive PLA filaments. The idea is for you use left over spools so you can print lots of whistles with whatever filament you have around. Best to stick to regular PLA and not use filaments with added materials. IE carbon fiber, glitter, etc. Also avoid soft filaments like silks and some matte filaments as they’re more prone to stringing. For this project, it’s a good idea to dry your filament before printing. Wispy strings interfere with wire vibration and often cause a 3D printed whistle to not work. PETG certainly works but it is even more prone to stringing. Drying PETG before printing is even more critical. The included 3MF files contain recommended print settings. Note that Prusa, Orca, Bambu and Cura slicers can open these same 3MF files and print settings will be included. Whistle Problems Turns out 3D printing any whistle can be challenging — particularly small whistles. I tested over a dozen available models before deciding to create my own designs. Some whistle printing problems are related to design. Some are specific 3D printing issues: layer bonding, stringing, retraction settings or filament issues. Wispy strings inside the sound chamber or in the window/fipple path can interfere with sound creation and projection. Stringing is often a symptom of wet filament. If you’re able, start by drying your filament. The next adjustment is to optimize printer retraction settings and to run retraction tests. Look for YouTube videos to help you test and adjust temperature and retraction settings for your particular printer. Next, make sure nozzle temperature is correct for the filament you’re using. To prevent air leaks, layer-to-layer adhesion must be perfect. A slight clog in your nozzle can create gaps between layers. Any air leak in the sound chamber can result in whistles not whistling. Always test print first Print out a single whistle to make sure it works well for you before committing to 10-50 at a time. What you're looking for is a full, resonant sound under low and high pressure blowing. No airiness. These whistles should deliver a crisp, sharp sound with little blowing pressure. If your printer is not well tuned or you have filament issues and your whistle doesn't whistle try these other changes: scale the model to 105 percent, change layer height, or adjust filament temperature. I have found that different filaments can sometimes give different results. When changing filaments I run a test before committing to large runs. I’ve printed 1K so far and get best results by using simple, basic high quality filaments. If you have a problem, try a different filament. That might be enough Again, print single whistles until your settings are dialed in before committing to production. Test every whistle You never know if a whistle works until you try it. So, like ACME in the UK who have been making whistles since 1870, I test every whistle. Rather than blow through each whistle and pass along germs I use a bulb-type camera lens blower. Simple and it works great. Remember: Make lots of whistles to share with your friends, family, and community Related Models PROTEST Whistle 1 ... https://www.thingiverse.com/thing:7288286 NICE Whistle 1... https://www.thingiverse.com/thing:7211638 NICE Whistle 2... https://www.thingiverse.com/thing:7282938 PEACE Pins... https://www.thingiverse.com/thing:7292294