Possible bad Stainless Steel nozzles

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MagicEngineer
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Possible bad Stainless Steel nozzles

Post by MagicEngineer » Wed Mar 15, 2017 8:41 pm

I recently bought a new hot end and 2 new .35 Stainless Steel nozzles. Today I got a nozzle clog and put on one of the ss nozzles. When I put a caliper on the extrusion it is coming out at .49. I swapped to the other new ss nozzle and got the same reading. I pulled the brass nozzle off my new hot end and used it , and got the expected .33 measurement. Is it possible that MG got in some bad nozzles?

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Jules
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Re: Possible bad Stainless Steel nozzles

Post by Jules » Thu Mar 16, 2017 2:43 am

Did you check the size stamped on the side of the nozzles? (Might have accidentally gotten a 0.5 mm nozzle or two.)

MagicEngineer
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Re: Possible bad Stainless Steel nozzles

Post by MagicEngineer » Thu Mar 16, 2017 3:06 am

They are stamped .35

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Jules
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Re: Possible bad Stainless Steel nozzles

Post by Jules » Thu Mar 16, 2017 3:44 am

Might want to measure the hole with a calipers then - they might be out of spec.

MagicEngineer
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Re: Possible bad Stainless Steel nozzles

Post by MagicEngineer » Thu Mar 16, 2017 3:58 am

Jules wrote:Might want to measure the hole with a calipers then - they might be out of spec.
I don't have the tools to measure the inside of the hole with calipers. That would be a mighty small set of calipers. All I can do is measure the extrusion that comes out. I am pretty sure that they are out of spec, I was just hoping it might be a known issue. I will open a ticket.

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Jules
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Re: Possible bad Stainless Steel nozzles

Post by Jules » Thu Mar 16, 2017 4:15 am

You should be able to see a comparison of the size to the other nozzle if you clean them off, from the outside, but it doesn't matter. Support ticket is probably the way to go anyway.

MagicEngineer
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Re: Possible bad Stainless Steel nozzles

Post by MagicEngineer » Fri Mar 17, 2017 6:53 pm

Update:

I picked up some small drill bits in order to get a better measurement of the hole than by extrusion. A .45 drill bit slides easily into the hole of a new cold stainless steel tip. A .5 will not slide in, but I believe if I were to heat it to extrusion temperature it probably would. I just don't want to chance making the hole larger. Makergear's supports answer to this, "it in line with expectations" So for anyone who values precision, you should know that a new tip with a hole that is 40% larger than it is supposed to be is good enough for Makergear.

MagicEngineer
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Re: Possible bad Stainless Steel nozzles

Post by MagicEngineer » Fri Mar 17, 2017 8:21 pm

Another update:

Now they have decided they will replace the nozzles. At this point, however I an too disgusted at their attempt to act like there wasn't any issue to even care. I refuse to believe that I received the only two nozzles that were out of spec, and that they didn't know that they have a bad batch.

3dPrintingMD
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Re: Possible bad Stainless Steel nozzles

Post by 3dPrintingMD » Fri Mar 17, 2017 11:02 pm

For what its worth, I recently purchased .35 stainless nozzles, and I have been printing non-stop with them, without issue.
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