RE: Diamondback nozzle clogged
I have 3 Diamondback nozzles and have only had 1 clog when I swapped between 2 high temperature materials. I was able to resolve with a cold pull. Since then, no clogs. I generally run cleaning filament through them when I switch between high and low temp materials. Also, I don’t use the Diamondbacks with PLA. I use a standard brass nozzle with PLA. Otherwise, to me, it’s like putting ketchup on a wagyu steak. I did have a brass nozzle get clogged. I fixed it by throwing it away.
RE: Diamondback nozzle clogged
One of those or similar might help get the matterial pushed down past the heat break, you will still have trouble if the nozzle has a split HF style design in the end though, might worth the try for such an expensive piece.
https://www.amazon.de/dp/B0FL2CXJD3?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1
Just wanted to add in my 2c, having also the Diamondback nozzle here. After around 5-6 prints the nozzle completely jammed, and I was only printing Prusa Galaxy Black PLA with the stock profiles. Trying to do a cold pull and or purge had no effect, because the jam was at the upper end of the nozzle where it wasn't hot enough to melt. It was also severed at the base, so I couldn't just pull it out. I stuck a stock brass nozzle on the printer and it kept going fine.
Today I spent maybe two hours with a heat gun at 400C running up and down the Diamondback nozzle, and used the included needle with my Core One kit to dislodge sludgy remains of the PLA inside. When I swapped it back in, I encountered the jam. So I had to do another round. I _finally_ got it to purge normally but the extruder gear was clicking the whole time (sign of trouble). And sure enough, the subsequent attempt at purging jammed (along with another cold pull attempt).
I have to say I'm pretty exasperated with this nozzle. It definitely wasn't cheap, and I was really expecting a pretty set and forget experience with it. The suggestions to use a drill bit is interesting. Might try that next. However, I'm leaning towards just sticking with the brass nozzle for the time being.