Elegant and low friction filament dryer, with humidity and temperature meter

Source file:

https://cad.onshape.com/documents/f2adbc6904f826a491842d3e/w/bc5dda76838c2711771f81b5/e/f3171c4c20f501312e47e19d

Things needed while assembling:

• M5x8 screw x2
• 4mm Pneumatic Connector x1
• 4mm Teflon tube
• 50mm Outer diameter PVC Tube, length around 160mm

Things to buy:

• Plastic sealed box: https://item.taobao.com/item.htm?id=541276637254 https://www.ebay.com/itm/Lock-and-Lock-Plastic-Food-Storage-Containers-Cake-Lunch-Box-Cereal-Sandwiches/302388994688?ssPageName=STRK%3AMEBIDX%3AIT&var=601222754703&_trksid=p2060353.m2749.l2649
• Humidity and temp meter: https://item.taobao.com/item.htm?id=551955999358 https://www.aliexpress.com/item/Mini-Portable-LCD-Digital-Thermometer-Hygrometer-Fridge-Freezer-Tester-Temperature-Humidity-Meter-Detector/32784445999.html
• Silica gel: https://detail.tmall.com/item.htm?id=15642009233 https://www.aliexpress.com/item/4-PCS-Blue-Silica-Gel-Desiccant-Box-Reusable-Silica-Gel-Desiccant-Damp-Moisture-Absorber-Silica-Gel/32793926937.html

Tips

Do not drill on the plastic box, might crack your thin plastic wall. Best way is to melt a hole by soldering iron, it's safer and give you extra distance for screw thread.