Go to your local welding supply store. They sell tools called "tip cleaners" that will help you do that. If the tip is too far gone you will have to buy a new one.
Be very careful with that set oxyacetylene tanks. I'm getting ready to do some oxyacetylene welding.
You cannot clean it. If it is clogged it must be replaced.
pore strips
no
clean out the jets and any other holes that are clogged
clean the streets
You don't clean a heater core. Once it's clogged, you cannot clean it out successfully. You need to replace it instead.
It can't be cleaned, just replaced and recycled.
Replace them with new ones.
No, if it is clogged the only fix is to replace it.
Just take a shower.
It is a tool they use to shove down your pipes to clean them out if they are clogged