Microswiss FlowTech™ CHT - High Flow Nozzle - Equipped with Bondtech CHT Technology - Multi Filament Channel Design (0.4mm)

I installed a MicroSwiss FlowTech hotend on my Ender-3 V3 to see how much more performance I could get out of what is already a pretty fast printer right out of the box. I like MicroSwiss products - they're very well made, and made in the USA, and their prices are not outrageous. This FlowTech hot end is a nice upgrade, but the performance boost is not that great unless you add the CHT nozzle, which is actually a bargain at around 22 bucks. So I ordered this CHT nozzle to go with the new hot end, and decided to do a 3-way volumetric flow rate test of the stock V3 hot end vs. the FlowTech with the included nozzle vs. the FlowTech with the CHT nozzle.My test results:For the test, I used the Max Flowrate test that's included in OrcaSlicer. I set it up to start at a fairly conservative 12 cubic mm per second and go up to a max of 50, in steps of 1 cubic mm per second. I used standard cheap no-name PLA at a temperature of 230C, with layer height of 0.2mm. All nozzles are 0.4mm diameter.The stock hot end with the stock nozzle produced a reasonably good max flowrate of 26 cubic mm per second, which correlates to a max print speed of about 300mm/sec - much better than most of my other printers. The FlowTech hot end with the included nozzle bumped that flowrate up to a respectable 29 cubic mm per second - a max print speed of about 345mm/sec - about a 12% increase over stock. Adding the CHT nozzle resulted in a flowrate of 38 cubic mm per second - a max print speed of about 450mm/sec.Bear in mind that these tests were performed with cheap, no-name PLA, with only a minor adjustment in the temp. So you're not likely to get reliably good results at 450mm/sec. but you should be able to increase your print speed significantly. The real benefit will come with printing larger models and printing at larger layer heights. You can also increase your line widths, which will allow you to print fewer walls, thus reducing print time even more.So, are there any negatives? Only two for me - I have half a dozen Creality "Unicorn" nozzles that won't work with the FlowTech hot end. But I can live with that. And the 6mm nozzle wrench for the standard Creality nozzles is too small for the MicroSwiss nozzles, so you'll need a 7mm nozzle wrench.This is a great product and will serve you well. The standard nozzle for the FlowTech is about 17 bucks so this CHT nozzle is only 5 bucks more. If all you ever print is small models, you won't benefit much from the added maximum speed, but you can still reduce print times by using thicker line widths and fewer walls.

I installed the Microswiss FlowTech hot end as I was assembling my new Sovol SV08 3D printer. I never printed with the original manufacturer's hot end and nozzle because I knew I wanted the FlowTech advantages. The Sovol nozzle is integrated with the heat block. To swap the Sovol nozzle requires unplugging the heater and thermistor from the extruder board, unscrewing the two screws that secure the nozzle, removing a clip, removing the heater and thermistor from the nozzle heat block (getting thermal paste on my fingers), installing the heater and thermistor on the new nozzle with more thermal paste, securing the heater and thermistor with the clip, using two screws to secure the nozzle assembly to the extruder, and plugging the heater and thermistor back into the extruder's circuit board. To swap the Microswiss FlowTech nozzle, use a 7 mm nut driver to unscrew the nozzle and screw in the replacement. Done.Microswiss makes a wide variety of nozzles for every application, in 0.4 mm, 0.6 mm, 0.8 mm and 1.0 mm. If lucky, OEM nozzles are available in brass and maybe steel. Many new printers ship with a nozzle and maybe a spare, and it's 2-3 months before the manufacturer has any spare 0.4 mm brass nozzles for sale, much less any variety. Microswiss offers much better quality nozzles in nickle plated brass, CM2 wear resistant M2 tool steel tip, CHT high flow, CHT high flow with M2 tool steel tip, and pretty much indestructible polycrystalline diamond nozzles.I always hated throwing away a collection of new nozzles when I updated to a new printer. Now, I install a Microswiss hot end on the new 3D printer and my investment in high quality nozzles is preserved.

Went from 24mm/s on my stock k1 max to a legit 50mm/s on Elegoo Hyper PLA+

I print entirely with PETG, and slowly for the most part, as I need detail on the first layer. It seems like a CHT really needs more speed to remain clog free. For my needs I print slow on the first 5 layers, but this guy seems to like to clog on the 3rd or 4th layer. I'm switching to a hardened steel traditional nozzle, and hope that resolves my clogging issue. (Filament printed from dry boxes with 10% RH, so it's not moisture...)

I start print and walk away knowing it is just going to work.

Took my flow rate for one test filament with the standard nozzle from 29mm3/s to 49mm3/s. This should be the standard nozzle for all Flowtech hotends.I did have to increase the tension on my extruder to prevent slipping, but I didn't have any skipping.