So I’m running into the problem which seems to be frequent with others - the nozzle becomes clogged in the middle of a print, and I start printing air. I’ve read and tried many of the suggestions made in other posts, and nothing seems to solve the problem - and every thread seems to end with “replace the hot end, they are cheap”. Well, I’m on my 4th nozzle in a week. Based on my consumption of filament, by the time I use up my $25 spool of filament, I will have replaced $150 worth of nozzles. That doesn’t seem that cheap…
I’m sure this isn’t what people meant, but it seems like I’ve tried everything else. It is definitely getting clogged. After the clog, I heat it up to about 225 and am able to push filament through. It often “curdles” at first, so I have to use a thin wire tool to clean out the nozzle - and then eventually I get a nice smooth flow. I also clean the entire nozzle with acetone until it’s completely clean. This wouldn’t be a big deal - if it didn’t happen every other job - or sometimes every job. The clog could happen 20 minutes into the job - or as long as 4 hours into it, which I think is the longest.
When I do change the hot end, everything works fine - for approx 15-20 hours of printing, and then I clog up again.
- I’m not printing too close to the bed. My z-axis is at .25mm. Any higher, and it just won’t stick to the bed.
- I calibrate every time, and at no point does the nozzle ever hit the bed.
- I’m printing at 215 degrees, which is 15 deg higher than PLA should need.
- The filament feeding is free - it is not getting caught, to where it can’t pull it in.
- I’ve set the Zhop and retraction distance to 1mm as suggested.
- I’ve changed out the filament (both are PLA from Snapmaker). I saw one comment that that’s the issue - but I’m having a hard time accepting filament that Snapmaker sells doesn’t work in it’s own product.
If it helps, I’m trying to print various objects from here: https://www.thingiverse.com/thing:3997817/files. They don’t seem complicated.
I’m not sure what else to try - but I can’t realistically replace the nozzles every few days. And I haven’t seen much to suggest that nozzles, while they sometimes need to be replaced shouldn’t be something you have to do frequently. Certainly, not one per 50-100g of filament used.
Would appreciate any suggestions! Thanks!