it has been a while since the last update and in the meantime I was able to clean up the jointer real good and figure out what knob does what. I will post some pictures when its up and running, probably the next blog entry.
More importantly I was able to find some screws!!! I ended up ordering screws for the new jet 6” jointer after looking around all over the place without much luck. Figured if anything is going to fit, these would be it. Well they arrived today and their thread and size fit perfectly. I was real excited and started setting the knives. Of course this was too good to be true and I come to find out that, the head of the screw, though the right size, its TOO THICK and would not fit in the slot in the cutter head.
This is where i need some help. I started sanding down the heads of the screws to match the thickness of the head of the old screws. I can sand them down enough to fit in the slot. Thats good news I guess.
In the picture below, you can see one of the new screws sanded down on the top left (square heads are new screws and hex heads are old screws), and old screw next to it and in the gib below 3 new screws and an old one. Have several questions as follows:
1. Old screws have a flat top and the new ones sort of come to a rounded peak in the center. when I sand them down would it make sense to leave a rounded peak like the new ones of sand them down flat like the old ones? They are butting up against a flat surface inside the grove in the cutterhead. To me it seems like the larger the contact area, the better the grip…
2. I am slightly concerned regarding the safety of all this as these are after all holding newly sharpened blades spinning at a very high rate. I do not want to think about what could happen if one was to fly out of the cutterhead. Do you think this is a concern since I am modding these screws?
3. Following up on question 2, I have to use 5 new screws. Should I divide them up evenly between the three cutters like 2-2-1 so that there is at least 2 old screws holding down each blade?
4. Or am I being too paranoid and this is a simple and safe design where the pressure applied by the screws is so high that the once they are tight in the slot in the cutterhead the blades are going nowhere.
Thank you for reading and your advice and I understand the disclaimer that I do whatever I do at my own risk :). I am planning on setting the knives first thing tomorrow morning so any advice you can give me would be great help.