This is an adapter for Ozito 18V battery trimmer (and possibly some Bosch trimmers as well) that uses a plastic blade for cutting.
It lets you insert a 2.4mm trimmer line (about 8cm long) and use that for cutting.
Simply cut a length of trimmer line and briefly heat up one end with a lighter so that a little bulb is formed.
Then insert the trimmer line into the adapter and slot that into the trimmer as per normal. Make sure the trimmer line is not so long that it touches the safety guard. If that is the case, simply trim off any excess with a cutter or scissors.
This part is best printed using PETG, which is a tougher and more flexible material. PLA is more rigid and breaks more easily. However, even with PETG, it will still break when it hits something really hard. Since this takes only 0.5m of material and 15 minutes to print, I will usually print a batch of nine at a time at very little cost. The blades that they sell do not break when it hits a hard object, but it will dislodge and fly off, so the end result to me is the same (but costs more).
I print this with 100% infill.
You can find the OpenSCAD source file and STL on Thingiverse.
Update 22 Sep 2019: PETG is still no tough enough for this part. I checked, and the original trimmer blade is made with PA-6, which is a type of nylon. PA-6 filament is available for purchase, but they are double the price of PLA/PETG.
It lets you insert a 2.4mm trimmer line (about 8cm long) and use that for cutting.
Simply cut a length of trimmer line and briefly heat up one end with a lighter so that a little bulb is formed.
Then insert the trimmer line into the adapter and slot that into the trimmer as per normal. Make sure the trimmer line is not so long that it touches the safety guard. If that is the case, simply trim off any excess with a cutter or scissors.
This part is best printed using PETG, which is a tougher and more flexible material. PLA is more rigid and breaks more easily. However, even with PETG, it will still break when it hits something really hard. Since this takes only 0.5m of material and 15 minutes to print, I will usually print a batch of nine at a time at very little cost. The blades that they sell do not break when it hits a hard object, but it will dislodge and fly off, so the end result to me is the same (but costs more).
I print this with 100% infill.
You can find the OpenSCAD source file and STL on Thingiverse.
Update 22 Sep 2019: PETG is still no tough enough for this part. I checked, and the original trimmer blade is made with PA-6, which is a type of nylon. PA-6 filament is available for purchase, but they are double the price of PLA/PETG.
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