It’s hard to find that part. I’ve been told by other printers that you can DIY something similar with metal pipe. I’ll have to see if I have any reference in old emails and try to get back to you here.
hi my name is preston verrine i’am a member of ladies of letterpress i have that part you are looking for it;s call a bale shutter. keeps the packing from sliping do you still need one take a closeup picture of the board they make 3 different models for 10×15 platen presses c&p kluges,vandercooks etc.or call 202-436-4432 i can ship it to you