HI, Am unable to get a part for my LG dishwasher. Figured i could repair the same if i could find a way to split open an ABS body impeller that has a worn out seal......the hitch is that the 2 parts have been fused together by a heating method possibly without using any glues (cant find any traces of glue). The fused parts are about 5 mm wide and about 1.5mm thick individually. its a spherical part about 6 inches in diameter and only the outer 5 mm seems to be fused as its hollow inside to house the impeller and related stuff.
Need a clean split of the fused parts as i would have to rejoin the same post repairs.....
Any suggestions would be gladly accepted......

Ethan

replying to recofill, passerby wrote:
If they were heat-welded like that intentionally during manufacturing, they
would for all intents and purposes become 1 part. So, your chances of cleanly
splitting them are slim to none. Are you hoping for a bad weld?

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On Friday, October 7, 2016 at 11:14:05 AM UTC-4, passerby wrote:
replying to recofill, passerby wrote:
If they were heat-welded like that intentionally during manufacturing, they
would for all intents and purposes become 1 part. So, your chances of cleanly
splitting them are slim to none. Are you hoping for a bad weld?


+1

Might as well cut them anywhere with a saw and then try to glue
it back together. Doesn't sound like something I'd do on a dishwasher
pump. Is it that a new pump is unavailable or just too expensive?
Try Ebay for a replacement pump?

In article ,
wrote:

HI, Am unable to get a part for my LG dishwasher. Figured i could repair the
same if i could find a way to split open an ABS body impeller that has a worn
out seal......the hitch is that the 2 parts have been fused together by a
heating method possibly without using any glues (cant find any traces of
glue). The fused parts are about 5 mm wide and about 1.5mm thick
individually. its a spherical part about 6 inches in diameter and only the
outer 5 mm seems to be fused as its hollow inside to house the impeller and
related stuff.
Need a clean split of the fused parts as i would have to rejoin the same post
repairs.....
Any suggestions would be gladly accepted......

Ethan-

Can you saw along the seam? A hacksaw might be too crude, but there are
saws with fine teeth. There is also the Dremel Moto Tool with a cutting
disc.

Fred

On Mon, 10 Oct 2016 18:04:28 -0400, Fred McKenzie
wrote:

In article ,
wrote:

HI, Am unable to get a part for my LG dishwasher. Figured i could repair the
same if i could find a way to split open an ABS body impeller that has a worn
out seal......the hitch is that the 2 parts have been fused together by a
heating method possibly without using any glues (cant find any traces of
glue). The fused parts are about 5 mm wide and about 1.5mm thick
individually. its a spherical part about 6 inches in diameter and only the
outer 5 mm seems to be fused as its hollow inside to house the impeller and
related stuff.
Need a clean split of the fused parts as i would have to rejoin the same post
repairs.....
Any suggestions would be gladly accepted......

Ethan-

Can you saw along the seam? A hacksaw might be too crude, but there are
saws with fine teeth. There is also the Dremel Moto Tool with a cutting
disc.

Fred

The components of the part are fused together using ultrasonic
welding. This is one of the strongest and most reliable ways of
joining plastic pieces.

You could try using a jewelers saw or a razor saw and then bond it
back together with epoxy, however if the impeller spins at high RPM,
balance might be an issue as well as the bonding product used.