After seeing many posts on Facebook suport groups asking for replacement parts, I decided to write down my recommendations.
Most of the reccomended parts are from Triangle lab which sells top quality products and are tested by thousands of people.
This is a better alternative to Ultrabase. Even 100k$ Stratasys 3D printers use a PEI sheet.The best thing is that PETG or other materials which stick to he bed really well can be easily removed with bending the flex plate. Bottom surface of printed parts remains almost smooth.
The most common upgrade used to be Ultrabase. This upgrade works very well, the best thing about it is that after a few minutes after the printing session finishes, printed parts just pop off the surface, so there is no need to use a spatula. It is a borosilicate glass with a special inorganic coating with a hardness of 8 Mohs. Anycubic says, that it has a tolerance of +-0.2 mm, normally +- 0.1 mm.
Read this guide with fan comparison. I have been tired of the noise. After hundrends of printing hours Kossel became very noisy a I couldn’t sleep at the same room so I have choosed new fans with sufficient air flow [CFM] and low noise [dB] and started working on this article.
I highly recommend using quality nozzles such as these. Original nozzle is 0.4 mm, you can buy larger inner diameter nozzle for faster printing. Also original V5 J-Head uses standard V6 nozzles.
One of the best and cheapest upgrades. This problem helps with thermal runaway problems and isolates hot ends from cold air running from cooling fan. Also this exact sock type allow you to just pop it on the hot end without removing heating element and thermistor.
This is a very important replacement part. Due to filament movement and friction, bowden tube wears and it’s inner diameter gets bigger and bigger over time. This causes extrusion problems, stringing and another problems. Filaments with abrasive parts, such as wooden, marble, glitters are the worst for this.
Original hot end uses standard glass thermistor inside a brass tube. This causes many problems with thermal runaway, because there is no thermal paste inside and thermistor often moves and falls out from the hot end.
This thermistor is an upgrade over the stock one. You will get rid of problems such as thermistor falling out and you will get much better thermal conductivity between hot end end thermistor
Original heating element without cable holder often breaks, it is caused by a play and movement between cables and heating element. This replacement is also 40W, please choose 12V if you do not have 24V modification.
Old belts can cause a lot of problems such as ghosting, because low quality or old belts can stretch. Kossel uses standard 6mm GT2 belts. Measure the lenght you need, usually 5-6m for all three towers.