this is the original and most complete book on the subject. this makes it more time consuming to fit the sandpaper to the machine. now it does not need much time. this means, that before anything else, we first need to take a step back and check if everything is running as intended. aside from that it was delicious. that's why they fail post-fix. use the contact form below and i will contact you as soon as i can. and then i watch a video of a super excited dog playing with an automatic ball throwing object, and i'm all better. 