How often do you....change the needle on your machine?
....clean and oil your machine?
....change the blade on your rotary cutter?

I've just did all that and boy my machine is humming like a bee again. Just amazing how much lint is collected underneath the bobbin casing.

I clean my machine before i start a new sewing task. Same with the needle. I don't change my rotarty cutter blade unless it gets dull. A good running machine make any project a joy to do :!:

I clean my machine real often.(an ounce of prevention is worth a pound of cure)..I oil it when it starts to look a little dry around the bobbin case,and I change my blades when they start feeling like I am trying to saw with a butter knife...LOL!

I change my needle when it starts giving me fits. I clean my machine each time I change the bobbin. I don't have to oil my machine. And I change my rotary blade when it needs it.

My machine----I clean it and change the needle between each large project. It doesn't need to be oiled.

My rotary cutter blade----I can't remember when I put a new one in.....maybe once a year? Or more? yikes....

I oil my machine when I turn it on. Everytime I change the bobbin I clean the lint. Needle when it makes noise.

I change my needle with every new project, and sometimes during if the project is large. I clean the lint out whenever I see some building up, and as far as oiling, my machines are electronic so no oiling is necessary except maybe some oil on the brush when cleaning the bobbin area. My rotary cutter, just changed it yesterday. Didn't realize how nice it is to have a sharp one; it was skipping. I have a sharpener but only use it once on a blade, they don't stay sharp very long after that.

I learnt to do it daily whenever my machine is in use. After using it I will change the needle for a new one and brush out all the lint etc under the bobbin case. Since I started doing that 10 years ago, my machine has never needed a repair or a service. I think that speaks for itself.

It is now a habit and it was easily gained. Especially important if you use cheap needles and you can!

I try to clean and oil my machine after about 8 hours of sewing. I don't count the hours I sit and rip out :lol:

If I'm sewing all day I clean, oil, and change the needle at the end of the day or the beginning of the next. I change the needle when it sounds like I'm sewing through paper and I'm not. I change rotary blades when they quit cutting through.