This 3D printing Troubleshooting guide looks pretty comprehensive – it certainly covers many of the problems I’ve run into, and it’s nice to have it organized in one place.
https://www.matterhackers.com/articles/3d-printer-troubleshooting-guide?utm_source=MatterHackers+Newsletter&utm_campaign=4ed3830de0-EMAIL_CAMPAIGN_2018_09_11_06_30_COPY_01&utm_medium=email&utm_term=0_dccd3cdce8-4ed3830de0-104627017
I always lightly sand down most my 3D prints then Cote them in apoxy👍