Problem
There is a reason why bondtech and others sell heatbreak upgrades for the Mini and Mini+. The actual heatbreak has a borehole that goes way to near to the nozzle. Another problem is the design, that is straight and has no cutout to minimize the heat travel. Therefore a lot of user experience a problem with the heat break.
printing on high temperatures may defor the PTFE tube
if the PTFE tube is replaces and not cut "perfectly" it has a gap that will easily filled with melted filament
Other printing quality issues that are related to the heatbreak
Solution Proposal
There would the following things to improve it
The borehole shouldn't be so deep. Like other allmetal hotends (like the micro swiss for Creality printers).
A cut out just after the heatblock leaves the heatblock
Use titanium alloy that has better termic blocker
Points 1-2 is used by the bondtech upgrade that is sold for about 20 USD. This upgrade should nod cost much for if you produce it in your sclae. Points 1-3 is used by the brozzle upgrade that is sold for about 25 USD.
Printer: Mini /Mini+
Problem There is a reason why bondtech and others sell heatbreak upgrades for the Mini and Mini+. The actual heatbreak has a borehole that goes way to near to the nozzle. Another problem is the design, that is straight and has no cutout to minimize the heat travel. Therefore a lot of user experience a problem with the heat break.
A good overview and explanation is in this video: https://youtu.be/5CLnF0a9vwY
Solution Proposal There would the following things to improve it
Points 1-2 is used by the bondtech upgrade that is sold for about 20 USD. This upgrade should nod cost much for if you produce it in your sclae. Points 1-3 is used by the brozzle upgrade that is sold for about 25 USD.
In the picture: Bondtech design (left), original (right). The credit for the picture (I took a printscreen at 6:55): https://www.youtube.com/watch?v=5CLnF0a9vwY