RE: Gluing PETG
Just my .02 worth. I had to split a part and print it into 2 pieces just due to the complexity. I found scrap prints of PETG (which is what these 2 split parts are printed from that need gluing are) and tested some adhesives and even Oatey used for PVC - nothing seemed to work very well. I remembered my fun with "Weldwood" contact cement which is used by carpenters for joining crown molding - and I was using it in the same fashion last summer doing some trim work in my daughters house...Anyway, I got out the Weldbond out of curiosity and noticed it was "multi surface" meaning wood, PLASTIC, metal.... So, after finding 2 scrap pieces with flat surfaces I could join, I painted on a very thin layer of this contact cement to each part, waited about 30 minutes (prescribed wait is at least 20 minutes but no longer than 2 hours), then joined the 2 dissimilar pieces together and clamped with my fingers for 20 seconds firmly. This stuff worked perfectly. And make sure you have the parts aligned very carefully, you get 1 shot - and 1 shot only - to join the pieces - it's that tight of a bond. Excess cleanup is either scraping away or you can even use duct tape to pull way excess. See below, right side cleaned up. When I experimented with this stuff last summer on 45 degree joints, I found that if you tried to break up the newly joined wood after it had cured for about 1 hour, the wood actually broke in other areas but not the glued joint itself. This stuff work exactly the same way with PETG....amazing stuff.
RE: Gluing PETG
Here's what I use to glue PETG lure bodies together. Sets up to a holding state in 10 -20 secs, clamp it and the parts will fuse. I wait until it is fully set before I knock the glue bead off (24 hours is a safe bet.) Been using it for years for bonding hard-to-glue plastics. The local plastics shop recommended it when I was bonding acrylic - Nothing sticks to acrylic sheet without this stuff. It's easy to use, comes in various sized tubes, consistency is on the runny side of gooey.
SCIGRIP 10315 16 Acrylic Plastic Cement
RE: Gluing PETG
@joantabb
I realize this is a very old post but I thought I would add to it. I use PVC cement available in any hardware store for pal & petg.
RE: Gluing PETG
I printed a large-text plaque in PETG & used it as address signage. I glued it to my mailbox using marine adhesive. Still holding strong, fully exposed in all weather for more than 18 months, including 2 winters.
Whatever you find to do with your hands, do with all your might!
RE: Gluing PETG
Ultrasonic? or screw the parts together and have a channel on the mating faces that you fill with silicone (or something similar) on assembly.
RE: Gluing PETG
I've had good results with Bostik All Purpose Clear Glue (Contains Acetone and Methyl ethyl ketone). Admittedly I generally use interlocking pieces and haven't had to rely on any glue for high strength face to face flat bonds.
RE: Gluing PETG
@lize
I will have to try that one.
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Chuck H
3D Printer Review Blog
RE: Gluing PETG
I'm going to try araldite this afternoon for bonding ASA to PEEK so will spot a dab on PETG scraps and report back. I'm trying this as need something for under a car bonnet that'll withstand heat, shame the original part I'm fixing to isn't ABS.
RE: Gluing PETG
I'm going to try araldite this afternoon for bonding ASA to PEEK so will spot a dab on PETG scraps and report back. I'm trying this as need something for under a car bonnet that'll withstand heat, shame the original part I'm fixing to isn't ABS.
Scratch that, I've just re-examined the piece and its Polypropylene which Araldite explicitly says it will not bond 😕