Micro Swiss All Metal Hotend with Slotted Cooling Block for Wanhao i3 w/.4mm Nozzle

Works great, just follow the instructions word for word and then do a test print. Your first few prints may not end well because you have to have your retraction in the right range.

Works great for higher heat filaments

Took a while to dial this thing in. Still have some issues doing flexible filament but overall great end which is much more durable than the stock design. Not sure if I would buy this over as it limits my printers ability to print flex/TPU consistently but does allow me to print nylon and tougher materials with no worries

Improves the print quality noticeably over the stock Hotend

Obvious tool marks and plastic on the nozzle. Tube is full of some sort of cooled filament. I put the nozzle under my microscope and it shows heavy wear, gashes and pitting. This hotend has had quite a bit of use. If you are going to sell used stuff please advertise it as used. Will be returning.

All I can say is that this is the best upgrade I have made to my 3D printer. Besides the ability to print more exotic filaments that require a temperature above what the stock hotend can provide, the print quality on my printer has greatly improved. Following the instructions as provided on the Micro Swiss website, the installation of this hotend took me about 15-20 minutes and was rather easy to perform. By looking at the negative reviews of this hotend, I can tell that those reviews are the people that have not followed those instructions resulting is clogs and misprints. However, if you follow those instructions, this will be the best $50 you will spend for your printer.

This thing is a godsend. If you have a 3D printer and want quality prints, this is an absolute must have. No excuses. This works so much better than stock.

made all my problems with printing PETG go away.

Ive only got a few days on mine, but so far its working well. It only takes a few minutes to install (maybe a little longer if youre not as comfortable taking things apart and putting them back together). I did add some thermal compound on mine, to make sure the cold end stays good and cold. I had to reduce my retraction. 1mm is working well for PLA. Ive been using 1.5mm with PETG and TPU without any issues so far (but limited prints). I did not have to change my temps at all - it seems to be holding very similar to my previous hot end. It does seem somewhat overpriced for the few small pieces, but ultimately it works.

I bought this when I was crazy focused on buying all the upgrades for my Wanhao i3, The install was super easy and took about an half hour, and there are videos showing install if you are unsure. I got stumped at securing the cooling block, which I forgot had a screw that attaches it and keeps it from moving. I have to say Micro Swiss makes a fine product and looks and feels like a quality product. I leveled my bed after install and I went right to printing and no clogs yet (knock on wood).