Metric screws - rock solid construction upgrade Toranado

thingiverse

I use original printed parts without modification and switch from #2 and #4 self-tapping screws to metric M2.5 screws instead. My reasons are: one, I don't have access to these self-tapping screws; two, I dislike them; three, using metric screws with metal nut inserts strengthens the construction without losing grip. You'll need: - Original printed parts for Toranado 2.1 (any version) - Brass insert nuts for M2.5 and M3 screws (length 3mm) - you can buy them here: https://pt.aliexpress.com/item/100pcs-M2-M2-5-M3-M4-M5-Braass-insert-nut-Injection-Molding-Brass-Knurled-Thread-Inserts/32879217592.html?spm=a2g03.10010108.1000016.1.599535c2IjQw9Q&isOrigTitle=true - Soldering iron - M2.5 and M3 thread screw tap (to clean holes from melted plastic) - The STL file added with this remix is just a dummy to publish this thing - you don't need it. Replace all #2 and #4 self-tapping screws with M2.5 cap head screws. Original M3 screws remain the same. Insert a long screw (about 20mm or more) with a brass nut attached as a guide into holes, then use a soldering iron tip on the nut to melt plastic and slowly insert until the nut is flush with the part. You may need to drill all holes where M2.5 nuts with a 2.5mm drill and M3 nuts with a 3mm drill to allow screws to enter and guide nuts properly. Do this for all self-tapped holes, then clean them (from melted plastic) with thread screw tap - do not use M2.5 or M3 screws to clean the holes. You will never have loose grip when using these metal nuts; the construction of the extruder is rock solid. I've posted some pictures of what I've done.