When you create a grinder you make it for filter or espresso. This means that when you focus on espresso it should have espresso oriented features:
- a way to dose the grinds into the portafilter easily- by either a PF fork holder see df64 or lagom p64, or a compatible cup- df64, lagom p64, weber eg1
- it should have low retention or a way to blow out the remaining grinds (in our case the grinder has a declumper at the chute- that catches the fines and chaff (when grinding coarse there is more chaff as it wont be cut to small pieces) this declumper will eat 0.2-0.5g of grinds and the smallest particles will glue to it while leaving the grinder so if you knock it into your portafilter dose you will have a nice pile of fines that will disturb your flow
- it is really slow with filter 78mm burrs at 800-1000rpm it takes more than 15-18 sec for a 12 g dose, if you are going to install high friction burrs for espresso I guess it will take 40-60 sec for a dose and in that time things get hot inside and ruin your coffee. These grinders/motors are also not rated to be used for a long period of time cause they overheat and by overheating you need to change the grind size.
Overall this is not made for espresso, and dumping a piece of espresso burr inside wont make it espresso. The same thing happened to ODE, if you throw 64mm inside ODE you can grind espresso (ssp 64mp, italmil burrs, gorilla gear) but it doesnt mean the weak 150w motor is rated for that and it takes a long time, and the experience is trash. On the other hand a df64 was made for espresso and it would work better.