Customizable laboratory funnel for gravity filtration

If you find this thing useful, buy me a cup of coffee! Support my work donating US$1,00. [](https://www.paypal.com/cgi-bin/webscr?currency_code=USD&cmd=_donations&business=TG533YVSH988S&amount=1&source=url) Certainly, labware made of glass is far superior than any plastic one. However, if you need one piece of lab equipment quickly or with a particular design, 3D print your own is a tempting choice. That was my case when I broke my large glass funnel during the holidays. So I decided to make my own with some features I thought every funnel should have. This customizer will create funnels of any size with some optional features. First you can choose the mouth diameter, pipe (or nec) length and the thickness of the walls. Optionaly you may have a chamfered pipe, a pressure relief (or vent) stripe and fluted filter supports. Update 2020-01-0