Pour Spout for Gallon Can (updated)

prusaprinters

<p>[Updated Dec. 28, 2020 to add files for PETG]</p> <p>The cheapest way for me to buy alcohol for build plate cleaning is to buy denatured alcohol in a 1 gallon metal can. Unfortunately, pouring out of these cans, even using a funnel, tends to be messy. To address that problem, I designed this pout spout.</p> <p>In researching the technical details for making this, I found that these cans are called "Steel F-Style Can" with "1.25in alpha cap." See the photos for a drawing with the cap dimensions (essentially a nominal 1.3in internal diameter 7 pitch thread).</p> <p>For those trying to create this cap/spout in other CAD software this may help : I used a 1.4in internal diameter with 7 TPI (threads per inch). I truncated the threads by 1mm and rounded the thread tops with fillets to better match the rounded thread profile on the can neck. The total thread length was 12mm.</p> <p>The OnShape 3D CAD files for this are here:</p> <p><a href="https://cad.onshape.com/documents/812081a6da11651a5cb6c88f/w/d88ae4c507e133fc8b5fd268/e/45882c37dee7fa4f702a2534">https://cad.onshape.com/documents/812081a6da11651a5cb6c88f/w/d88ae4c507e133fc8b5fd268/e/45882c37dee7fa4f702a2534</a></p> <h3>Print instructions</h3><p>Print in PLA using the 3mf files provided, although I recommend PETG (see material recommendation below).</p> <p>[SEE UPDATE BELOW]</p> <p>I expect that PLA will hold up to use with denatured alcohol, isopropyl alcohol, and even acetone for brief exposures. PETG would be a better choice, and the best choice would likely be nylon (but I am not yet set up to print nylon). I use PLA for my print because the low cost and ease of use make it a good choice for prototyping. However, I will use PETG for any additional prints.</p> <p>As a final note on filament type choice, this is of course dependent upon the type of liquid you plan to use it with. I suggest consulting a chemical resistance chart to choose a filament type that matches well with your planned use.</p> <p>Note that I included a spout cap in the print - for use when keeping the spout on the can. Note that keeping the spout on the can will result in long term exposure to solvent vapors, which may not be a good idea. For myself, I only intend to put the spout on the can when needed for dispensing.</p> <p>Update Dec. 28, 2020 :</p> <p>I needed another copy of this print so I followed my own advice and made it in PETG. I added the 3mf and gcode files for PETG.</p>