Anders Olsson 136
The melt zone on my custom heater block is about 4 mm longer than on the original heater block.
I have been using various iterations of the custom heater block for four months and about 500 hours now and what I can say is:
- I basically use the same settings as I did for the original heater block and I can not notice any major differences.
- It appears like the custom heater block can sometimes tolerate a bit lower printing temperatures, like 5-10 degrees, but it is nothing that I use.
- When pushing it, I mean far beyond what you would do with a 0.4 mm nozzle for normal printing, it seems the custom heater block can tolerate a bit higher extrusion rates.
All things above are consistent with the longer melt zone I would say.
The mass of my custom heater block including one 0.4 mm nozzle is about 40% higher than the original heater block.
This makes heating it up slightly slower, and potentially makes the temperature a bit more stable, but should not have any other effects. (As Daid reduced the sensitivity of the sensor monitoring function a lot lately)
I am probably not going to put more effort on calculations and measurements on the custom heater block, since the ones I have been using so far basically works as good as or better than the original heater block.
For the nozzle design, I encourage people to test different nozzles and report back their findings! :smile: (Just remember to level the buildplate when you change nozzle!)
There seems to be almost as many nozzle designs as there are printer models, all slightly different. Some probably can tolerate a bit higher flow, others have better oozing properties, and so on.
Which is better on what is quite difficult to get any information about though.
I agree with previous replies that the teflon spacer is the main thing to focus on when it comes to underextrusion issues.
Recommended Posts
Top Posters In This Topic
110
109
71
62
Popular Days
Aug 18
22
Feb 19
22
Feb 20
19
Jan 24
19
Top Posters In This Topic
swordriff 110 posts
gr5 109 posts
ultiarjan 71 posts
Anders Olsson 62 posts
Popular Days
Aug 18 2015
22 posts
Feb 19 2015
22 posts
Feb 20 2015
19 posts
Jan 24 2015
19 posts
Posted Images
gr5 2,229
@gixxer - remind me - sorry I don't want to reread it all - but is it possible there was a temp sensor change in all this? Maybe the old temp sensor was reading off and the head was much cooler than you thought?
Link to post
Share on other sites