glue for 3d plastic printed parts

fishlessman

i broke a part on a lure jigging device, a tight hairline crack about 3 inches long. it now takes on water and sinks.  any ideas what glue to use, superglue?  figure theres different materials for 3d printing so dont know if one glue works for all or not. any ideas

hoosier_egger

I 3D print. I use gorilla glue and never had an issue with various materials. 

paqman

if it cracked, it is likely PLA and superglue should work.

Canugghead

Above would work for open joints or cracks, IMO the challenge is getting the glue into fish's hairline crack, assuming opening the crack to apply glue is not an option. Perhaps what he needs is a needle tip injector?
https://www.leevalley.com/en-ca/shop/tools/supplies/adhesives/glue/30261-chair-doctor-glue?item=05K9901&gad_source=1&gad_campaignid=22430194304&gbraid=0AAAAAClVJ5gfSqyIw86eo3H8FrgPb98uz&gclid=CjwKCAjwyYPOBhBxEiwAgpT8PwKDdLGoK9NBMQL1fV2cUd_FaCEZAoyc4A5qlDFo2Km6iDWt6hELxxoCQqEQAvD_BwE

Edit: Perhaps @paqman can 3D print a new part for you 

paqman

Canugghead said:

Above would work for open joints or cracks, IMO the challenge is getting the glue into fish's hairline crack, assuming opening the crack to apply glue is not an option. Perhaps what he needs is a needle tip injector?
https://www.leevalley.com/en-ca/shop/tools/supplies/adhesives/glue/30261-chair-doctor-glue?item=05K9901&gad_source=1&gad_campaignid=22430194304&gbraid=0AAAAAClVJ5gfSqyIw86eo3H8FrgPb98uz&gclid=CjwKCAjwyYPOBhBxEiwAgpT8PwKDdLGoK9NBMQL1fV2cUd_FaCEZAoyc4A5qlDFo2Km6iDWt6hELxxoCQqEQAvD_BwE

Edit: Perhaps @paqman can 3D print a new part for you 

Super glue is liquid enough that it will get into cracks by capillarity as long as it is not the gel version.

If the source file is available, I can definitely print a few new ones.  I could even print out of PETG for better resistance.

alaskanassasin

You could get some thin ca and wick it in

fishlessman

will try the superglue.  been buying these since the early 80's. the grand dad, his son, and the new generation.  noticed the site was down, checked facebook and the last post was a year ago. im thinking the son might have the part kicking around. prop spins with the boat going 2mph plus, spins gears which jigs a line clip. i had this one built with an 8 foot jig action like the grand dad built the originals

 i can open the crak a little by bending it slightly which shoul help with the glue

paqman

The picture isn’t great but are you sure that’s it is 3D printed?  It looks pretty smooth/shiny for something 3D Printed

fishlessman

paqman said:

The picture isn’t great but are you sure that’s it is 3D printed?  It looks pretty smooth/shiny for something 3D Printed

the first ones were a little rough with the linear lines. they sand and coat with a 2 part epoxy process now.  these parts were the original non smooth pieces

the son built a manufacturing job shop plant just for 3d parts, this was his last build for a jigger mounted down deep with a down rigger dropped down on a 12 pound weight. this was last years 3d printed version, adds a realistic decoy to attract fish to the lure

GrateEggspectations

Some neat work by your son, @fishlessman. Don’t tell him I said so, but it’s almost too pretty to use!

fishlessman

GrateEggspectations said:

Some neat work by your son, @fishlessman. Don’t tell him I said so, but it’s almost too pretty to use!

not my son. ive been buying these from a salmon fisherman in nh, grandfather, son then grand son. they really work well. be a shame if they stop making them after all these years.  they improve them every few years until that rainbow one last year. ive got other jiggers but they need power sources, these just need moving water

paqman

where is it cracked?

fishlessman

paqman said:

where is it cracked?

top to bottom on the upper section, its hollow to help it float. i tie it to the side of the boat with a 75 foot rope, one on each side and it gives the fishing rods a 150 foot spread in the water trailing the boat. ill get a pic this weekend showing the crack before gluing 

paqman

I could be wrong but I doubt that PLA would survive the kind of forces at play here.  This was likely printed with something else like ABS/ASA/PETG.  If I had to bet, I would say ASA.  Superglue doesn’t work well with the materials mentioned above.  When I first answered, I was under the impression we were dealing with a small lure or something like that.  I guess it could still be PLA considering the acrylic or polycarbonate core but there is a good chance that it is something else.  Superglue will stick but the joint will be brittle.

hoosier_egger

I’d have to heat my chamber to print ABS otherwise, I’d tell you to send it to me and I’ll scan it and reprint it for you. 

paqman

hoosier_egger said:

I’d have to heat my chamber to print ABS otherwise, I’d tell you to send it to me and I’ll scan it and reprint it for you. 

3d scanner 👀

Canugghead

I know who to call when my Delonghi Magnifica's plastic parts start breaking 

fishlessman

paqman said:

I could be wrong but I doubt that PLA would survive the kind of forces at play here.  This was likely printed with something else like ABS/ASA/PETG.  If I had to bet, I would say ASA.  Superglue doesn’t work well with the materials mentioned above.  When I first answered, I was under the impression we were dealing with a small lure or something like that.  I guess it could still be PLA considering the acrylic or polycarbonate core but there is a good chance that it is something else.  Superglue will stick but the joint will be brittle.

ok, now the outside is covered with a two part epoxy, that seems to be holding up well for the shine.  maybe thats a better option. ill look at it better this weekend, maybe it comes apart and i could epoxy it both sides. it does not need to look good, it just needs to be functional