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6.5 retraction seems to be way too high. Try lowering it to 3mm or even 2mm. (I have my ender set to 2mm).

_{Disclaimer: my knowledge on this topic is not extensive. Nontheless, below is what I currently know. Make sure to read comments below for more info.}

One of the most important parameters when deciding on the retraction value is the length of the bowden tube. The longer the tube - the higher retraction value should be set. It has to do filament compression as extruder is pushing filament into a nozzle. The longer the distance between extruder and nozzle --> the more filament there is that can be compressed --> the higher retraction value you need to be set to avoid too much filament coming out of the nozzle.

With all that said, based on my personal experience and experience of my friends who own this printer, for a stock ender 3 the value of 5-6 mm retraction is too high. Some of my friends' printers make good prints with retraction set to 3 mm. My printer likes the value of 2mm better, for whatever reason (I modified extruder and hot end on my printer, maybe that has to do with it).

3D printers kind of "have personalities" and require tinkering around for you to find out correct values for your prints. Modifications, filament type, filament brand and many other things/parameters can and do cause requiring changes to your printing values.

So tinker around and see if lowering retraction values gives you better prints.

6.5 mm retraction seems to be way too high. Try lowering it to 3 mm or even 2 mm. (I have my Ender set to 2 mm).

_{Disclaimer: My knowledge of this topic is not extensive. Nonetheless, below is what I currently know. Make sure to read the comments below for more info.}

One of the most important parameters when deciding on the retraction value is the length of the Bowden tube. The longer the tube, the higher the retraction value should be set. It has to do filament compression as the extruder is pushing filament into a nozzle. The longer the distance between the extruder and nozzle, the more filament there is that can be compressed, therefore, the higher the retraction value you need to set to avoid too much filament coming out of the nozzle.

With all that said, based on my personal experience and the experience of my friends who own this printer, for a stock Ender 3 the value of 5-6 mm retraction is too high. Some of my friends' printers make good prints with retraction set to 3 mm. My printer likes the value of 2 mm better, for whatever reason (I modified the extruder and hot end on my printer, maybe that has to do with it).

3D printers kind of "have personalities" and require tinkering around for you to find out the correct values for your prints. Modifications, filament type, filament brand, and many other things/parameters can and do cause requiring changes to your printing values.

So tinker around and see if lowering retraction values gives you better prints.

6.5 retraction seems to be way too high. Try lowering it to 3mm or even 2mm. (I have my ender set to 2mm).

_{Disclaimer: my knowledge on this topic is not extensive. Nontheless, below is what I currently know.}

One of the most important parameters when deciding on the retraction value is the length of the bowden tube. The longer the tube - the higher retraction value should be set. It has to do filament compression as extruder is pushing filament into a nozzle. The longer the distance between extruder and nozzle --> the more filament there is that can be compressed --> the higher retraction value you need to be set to avoid too much filament coming out of the nozzle.

With all that said, based on my personal experience and experience of my friends who own this printer, for a stock ender 3 the value of 5-6 mm retraction is too high. Some of my friends' printers make good prints with retraction set to 3 mm. My printer likes the value of 2mm better, for whatever reason (I modified extruder and hot end on my printer, maybe that has to do with it).

3D printers kind of "have personalities" and require tinkering around for you to find out correct values for your prints. Modifications, filament type, filament brand etc. can and do cause requiring changing to your printing values.

So tinker around and see if lowering retraction values gives you better prints.

6.5 retraction seems to be way too high. Try lowering it to 3mm or even 2mm. (I have my ender set to 2mm).

_{Disclaimer: my knowledge on this topic is not extensive. Nontheless, below is what I currently know. Make sure to read comments below for more info.}

One of the most important parameters when deciding on the retraction value is the length of the bowden tube. The longer the tube - the higher retraction value should be set. It has to do filament compression as extruder is pushing filament into a nozzle. The longer the distance between extruder and nozzle --> the more filament there is that can be compressed --> the higher retraction value you need to be set to avoid too much filament coming out of the nozzle.

With all that said, based on my personal experience and experience of my friends who own this printer, for a stock ender 3 the value of 5-6 mm retraction is too high. Some of my friends' printers make good prints with retraction set to 3 mm. My printer likes the value of 2mm better, for whatever reason (I modified extruder and hot end on my printer, maybe that has to do with it).

3D printers kind of "have personalities" and require tinkering around for you to find out correct values for your prints. Modifications, filament type, filament brand and many other things/parameters can and do cause requiring changes to your printing values.

So tinker around and see if lowering retraction values gives you better prints.

6.5 retraction seems to be way too high. Try lowering it to 3mm or even 2mm. (I have my ender set to 2mm).

6.5 retraction seems to be way too high. Try lowering it to 3mm or even 2mm. (I have my ender set to 2mm).

_{Disclaimer: my knowledge on this topic is not extensive. Nontheless, below is what I currently know.}

One of the most important parameters when deciding on the retraction value is the length of the bowden tube. The longer the tube - the higher retraction value should be set. It has to do filament compression as extruder is pushing filament into a nozzle. The longer the distance between extruder and nozzle --> the more filament there is that can be compressed --> the higher retraction value you need to be set to avoid too much filament coming out of the nozzle.

With all that said, based on my personal experience and experience of my friends who own this printer, for a stock ender 3 the value of 5-6 mm retraction is too high. Some of my friends' printers make good prints with retraction set to 3 mm. My printer likes the value of 2mm better, for whatever reason (I modified extruder and hot end on my printer, maybe that has to do with it).

3D printers kind of "have personalities" and require tinkering around for you to find out correct values for your prints. Modifications, filament type, filament brand etc. can and do cause requiring changing to your printing values.

So tinker around and see if lowering retraction values gives you better prints.