"He who marches out of step hears another drum." ~ Ken Kesey
Come on Rick. I've seen those gems you get to run with.
Hi, I just made the connection that videos I had been watching on YouTube were from yourself, I was impressed at the speed you could run your print heads, and it has made me think I need to change the way I run my mhm x type plus. Printing international coatings legacy white, print flash print through Newman screens with a 150s mesh the fastest I can run the print head is 0 to 1.5 out of a possible 10 on the mhm dial and still get the screen to clear, this prevents me going any faster than 520 print per hour. Not sure what's holding me back? Action double blade squeegee, with a pair triple ply blades, 50/90/50 (orange ones)Ic legacy ink (we print a lot of poly cotton sweats, so easier to use just one white ink rather than also use a cotton white)Off contact set to 4 for tees and 8 for sweats ( I believe that's mm so 8mm off contact for a sweat, it seems excessive, but any less and the screen will not clear with one stroke)Open to suggestions of how I can improve speed?
Quote from: shirtshack on February 13, 2017, 04:24:18 AMHi, I just made the connection that videos I had been watching on YouTube were from yourself, I was impressed at the speed you could run your print heads, and it has made me think I need to change the way I run my mhm x type plus. Printing international coatings legacy white, print flash print through Newman screens with a 150s mesh the fastest I can run the print head is 0 to 1.5 out of a possible 10 on the mhm dial and still get the screen to clear, this prevents me going any faster than 520 print per hour. Not sure what's holding me back? Action double blade squeegee, with a pair triple ply blades, 50/90/50 (orange ones)Ic legacy ink (we print a lot of poly cotton sweats, so easier to use just one white ink rather than also use a cotton white)Off contact set to 4 for tees and 8 for sweats ( I believe that's mm so 8mm off contact for a sweat, it seems excessive, but any less and the screen will not clear with one stroke)Open to suggestions of how I can improve speed?If your off contact is 4mm for regular tees then I'd say that is a bit excessive, but probably not your issue unless your screens are of VERY high tension. A 150/48 isn't capable of high tension so I don't think you have a problem there. Our OC is usually around 1/16" to 1/8". I've never used the Action double blade but I know enough about it to think that it's not your problem but you should be able to use a standard blade, 70 duro, and clear a 150/48 with one stroke at 15"/sec, and we routinely run in excess of 25"/sec on a 150/48 and white ink. Maybe try a harder blade, keep your squeegee angle fairly high, around 80 degrees, but no less than 70 and as upright as possible and still deposit enough ink. I think most people use too much angle, and I think 75-80 degrees is good for printing with speed. I don't know that I really have a "specialty" when it comes to this thing we do, but I put a lot of emphasis on print speed and have always worked to maximize opacity with minimal print strokes, and speed has a huge impact. You have to have a shorter bodied white, you need open, thin thread mesh, sharp blades, upright (75-80 degrees is good, and even running at 85-88 is fine) and that's the main things you need. I really want to do some research and get some real experience with our printing methods while running different brands of machinery. I know they work well on the RPM and now on the G3, they work on an all-air diamondback but that's about the extent of the autos that I've tried these techniques on. If I could spend a few hours, maybe a day on an MHM or Sroque that would be enough time to test our techniques but finding the time and finding participants isn't easy. Everyone is busy and I can't travel very far to do this. I know a guy that knows a few things about screen printing, as in he's pretty much the most knowledgeable guy in the world when it comes to textile screen printing, and he's had mixed results with high speed shearing with a few different brands of machinery but it's by no means a settled debate. It just takes one little variable to throw off the entire system and I'd feel good about getting on some of those machines with our screens, our ink and our squeegees to see if in fact there is something to the theory pertaining to the different types of chopper/printing mechanics used on various autos.I don't have any IC Legacy to see how short it is, but if it's long bodied, kind of like chewed bubble gum when pulling your spatula out then that would be the 1st place I looked. Shorter body white will print much faster than long. If you need more info in how to tell if you've got short, medium or long bodied white, let me know and I'll do a video of what I look for.
Alan, what short bodied ink are you running? It seems the trend right now is long and frankly the inks I used to love I am not a huge fan of anymore.