Windmill Guides rising too high???
Hi,
More questions.
I’ve not been using a windmill for long so pretty clueless, as you’ll know from my previous posts.
My next problem is this….
Should the brass guides be rising above the bottom of the platen or level with it? Mine seems to rise slightly above, after looking for the ‘stop’ it looks like the suspect might be the shiny bit in the picture attached, is it high enough? Is it even the bit regulated the height the guide bar rises to? (excuse the dirt and grim, ill clean it i promise).
The other issue is the pins are hitting the boxcar base and are pushing into the stock, ive cut the make ready/packing where the pins hit but am still having the same problem.
Im very happy with the KF95 (.95mm) polymer plates btw, dont know why I was worried about not getting an impression, although I’m strugging to get an even impression, tried taking as much packing out at possible and cranked the impression upto 4 but still unever (deeper impression at the bottom). I couldn’t tell if the shearing collar had hair line fractures when I had a look, this could be the culprit right? (shearing collor wasnt shattered).
Thanks in advance.
Rich
gripper.jpg
,
That set screw/hex bolt you see (not what the arrow is pointing to) is a fine adjustment for the guides that will raise or lower them in a 4 pt range. Maybe it’s set at its highest point?
As for uneven impression, that’s typical of a platen press, where it will usually be heavier at the bottom. You need to adjust your packing to account for this. You can use a series of stepped back sheets if you need to cover a large area, or just build up or reduce the packing under the areas needing adjustment. I’ve found when you use a lot of packing adjustments over a form, it helps to put something like a hard mylar over it to spread the pressure evenly.
too much pressure at top of platen lower impression on lever and add packing . too much impression at bottomof platen reduce packing and increase pressure . of course dont crank the pressure up too high . this problem is known as toeing and .heeling .