HELP!
I have a homemade printer i bought a few years back and it clogged when using woodPLA filament. I have used the filament before with success but this time not only did it clog, all my usual ways to fix it have failed. Any suggestions are appreciated.
I set a clogged extruder with wood pla on warm then put in a drop of finger nail polish remover it broke the clog up in about a day
@wolfgang_schroeder so you left it on warm with the nail polish remover in the extruder from the top?
Yes I had a skinny dropper that I used to get the drop in past the plastic part that’s on top of mine
@wolfgang_schroeder thank you, I’ll try that
Have you tried a cold pull?
@Niko_Fabri your welcome good luck 
@Sven_Eric_Nielsen cold pull?
A word of warning, Acetone has a low boiling point and it’s vapour isn’t good for you.
@Niko_Fabri
Take a piece of abs (could be that pla also works), heat your extruder, push the abs in the extruder (by hand) and then let the whole thing cool down. Now comes the tricky part. Pull your filament out of the hotend. But it’s tricky to find the right temperature when you do it the first time.
On our rep2x it’s around 150°C with abs. On my other hotend (similar to e3d) it’s around 170°C.
Could be that you have to repeat this 2-3 times. But this way you get everything out of the nozzle because it simply sticks to the filament 
Just found this page with some pictures :
http://bukobot.com/nozzle-cleaning
I think it’s a guide from :
@Whosa_whatsis
My cold pulls have gone clean now… Should I try pushing a pin in from the extruder tip?
It can be hard to find a pin thin enough. I have found that if you strip the coating off of a “twist tie” plastic coated wire twisted around bags and such it works perfectly to clear stubborn clogs (while heated)
Check out this “Needle File Set 0.38-1.54mm” on eBay.
I use similar and might be of use to you as they are actual files, not straight as in a pin.
http://www.ebay.co.uk/itm/Stainless-Steel-Welding-Torch-Tip-Nozzle-Jet-Cleaner-Needle-File-Set-0-38-1-54mm-/231547919080?hash=item35e954dae8
Use oil when printing. Just a little drop on the filament.
I’ve done extreme cleans with pla. (Acetone does nothing to clean pla) a cold pull is fine but my clogs usually happen when the cooling fan on the coldend pulls its plug and stops. The barrel heats up and the filament thickens and when it get high enough ot cools and blocks. To remove you need to heat it without the fan and melt the whole lot again to remove. OR I take the whole lot appart the nozzle goes into a vice and i use a lighter to warm it. When the plastic starts bubbling I do the cold pull procedure a few times. There is a sweet spor thats between melting all the plastic and metling the nozzle that also works nicely but thats with my oxy acetylene torch and very little application of heat cos that thing will turn your nozzle into scrap metal in about 10 secconds. … reading this now it seems i may be going a little overboard with cleaning nozzles…
@Michael_Scholtz
YES, there a lot different techniques to clean a clogged nozzle. And not every situation is the same. It’s at least good to know different techniques.
Styrene liquid works (take extreme care for vapour!!!), it melts abs like a boss (yes abs contains styrene), melts pla well, dip and shove, I use polyvinyl alcohol afterwards.
Just Don’t burn the stuff(styrene, acetone), but vapour does exists without burning it, china made nozzle are worst, nothing works (shove it, burn it…everything), I make my own nozzle , no problem with jams (costs only a penny)