Framer Ken,
Sorry to hear that you're still getting inconsistent cuts on your Fletcher F-2100. Part of the problem of doing diagnostic work via E-mail is that the language/terminology sometimes gets in the way. To help clarify and hopefully solve your problem....
"A wavy line (cut)" = A cut that fluctuates from a straight and parrallel cut to the clamp. This is typically caused by incorrect stance at the end of the cutter, play - loseness in the pivot assembly, or play in the cutting head itself.
"Hook - Hooking" = This curving at the beginning of the entry is similar to the above but unique and a present qualtiy of ALL mat cutters. The control element can obviously minimize this natural tendency of the blade to move away from the clamp after it first enters the board (ie start of cut). Minimized or eliminated by: Correct blade depth; Proper stance; New/sharp blade; Pivot assembly adjustment and Cutting Head adjustment.
Clamp Pressure = This was discussed fairly extensively in your previous post/question,
Fletcher Mat Cutter. Light pressure near the end of the clamp (closest to the operator) is desired. If the person using the machine has exerted too much pressure on the clamp, over time, a reverse bow in the clamp could develop. Sight down the clamp to verify that indeed you have a slight downward bow to the clamp.
Blade Choice = It's important to remember that blades are made by blade manufacturers to offer variety to the end users (preferences) and that indeed they will behave differently. As
Frank shared above, he rarely uses a .015 thickness blade. I would concur, that most framers lean towards an .012 standard (Honed both sides) blade for most mat cutting. It is thinner = less resistance.
SE Blades = Honed primarily on one side only, these blades were designed to compensate for the "hooking" problem described above. It is important to recognize that although they may help with this problem, they also may produce more of a tell tale exit mark at the end of the cut (the small cut line on the bevel). Also if installed backwards, (you should know) you'll produce horrible wandering cuts as well! Fletcher offers their SE blade in a .015 thickness.
Ken -- When you made your switch to .015 blades, were they standard or SE? You mentioned checking you head adjustment (firm), but how about the pivot assembly? Please review this information carefully, and write back to me directly if I can be of further assistance.
If all else fails, I will be glad to meet with you at the Spring Fair in Birmingham, 2-6 February, 2003. Look forward to seeing you there, regardless!
Regards,
John
