solution: (well i know about what u can do in America, but im sure similar things are found in NZ)

u can get electric kitchen grinders for like 8 bucks @ walmart

u can then use a gardening scissors also very cheap at stores to cut up the stems into smaller pieces and make small patches of them and grind each one separately, it gives u a mesh of them stems and also a find greenish powder, just use a kitchen screen ($1 item) and get the powder out, then u can do what u want with powder inclduding mixing it with what u toke on or topping it like kief...

and/or u can then throw them meshed up stems (it will look like gardening moss but with slimmer hairs and pieces) in your bottle and make some goodass drank!

forget damage to blades, those blades are quite tough unless u have really fat/wood-like branches there. just watch out not to burn out the grinder, read its manual and dont use the motor in long sessions... do it batch by batch and give the motor a lil break, manual should spell all these out

OR the cheapest way:

as i figured, most of THC on stems resides on surface of stems, not inside them, so u can get any knife and start scrapping the green outside surface of the stems, which will be excruciatingly frustrating for large amounts of stems... this way u r getting the same green powder produced by a grinder


i would go with 1st choice, dip the meshed stems in alcohol and use most of the powder for a batch of brownies!

good luck