1 Topic by dineshwong

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Topic: Pipe Nipple twisting

Hello,

I just assembled my Filastruder and everything seemed to work fine. I ran the motor without any pellets and it worked fine. The temperature of the PID reached 180 deg and I started feeding the ABS pellets through the hopper.  After a while the pipe nipple started turning along with the auger. I have read about this problem in this forum and i believe the problem is with the main support assembly. But I am not able to pin point the problem.

* My main bolts were less than 3 inches, so I did not use any spacers. When i fully tighten the bolts, they do not let the auger turn, So I tightened it to allow some axial movement as mentioned in the instructions.

* about 1/4" of the auger was protruding out of the nipple when fully assembled.

Let me know if I had missed something.

2 Reply by dineshwong

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Re: Pipe Nipple twisting

i.imgur.com/MKJPU5h.jpg

Here is a picture

3 Reply by elmoret

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Re: Pipe Nipple twisting

You have assembled it incorrectly, for starters. the instructions don't say no spacers if bolts less than 3 inches, they say you don't need the SECOND set of spacers if bolts less than 3 inches.

7.) Lay out 4 main bolts, put a washer on each. If your main bolts are 3” or longer, put on a black spacer too.
8.) Slide bolts through the flange, then put a black spacer on each bolt, then slide through the wooden support, and then the flange. The flat side of the flange faces the wooden support.

So if less than 3", you end up with one spacer on each bolt.
If greater than 3", you end up with two spacers on each bolt.

If the nipple is twisting, either you did not wait long enough after 180C was reached (15-20 minutes after 180C, as noted in the instructions) or you did not tighten it sufficiently during assembly.

Filastruder - the robust, inexpensive filament extruder
E3Dv6 All Metal Hotend - the premier 3D printing hotend

4 Reply by shields1.as (edited by shields1.as 2015-02-11 03:14:56)

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Re: Pipe Nipple twisting

So if the bolts are less than 3 inches use one black spacer in the middle. Correct?

elmoret wrote:

You have assembled it incorrectly, for starters. the instructions don't say no spacers if bolts less than 3 inches, they say you don't need the SECOND set of spacers if bolts less than 3 inches.

7.) Lay out 4 main bolts, put a washer on each. If your main bolts are 3” or longer, put on a black spacer too.
8.) Slide bolts through the flange, then put a black spacer on each bolt, then slide through the wooden support, and then the flange. The flat side of the flange faces the wooden support.

So if less than 3", you end up with one spacer on each bolt.
If greater than 3", you end up with two spacers on each bolt.

If the nipple is twisting, either you did not wait long enough after 180C was reached (15-20 minutes after 180C, as noted in the instructions) or you did not tighten it sufficiently during assembly.

5 Reply by elmoret

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Re: Pipe Nipple twisting

Yes.

Filastruder - the robust, inexpensive filament extruder
E3Dv6 All Metal Hotend - the premier 3D printing hotend

6 Reply by knowack (edited by knowack 2015-02-11 17:10:22)

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Re: Pipe Nipple twisting

This thread is not at all about what (I thought) the title suggests!

***sigh***

7 Reply by dineshwong

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Re: Pipe Nipple twisting

Tim,

The extruder works fine after using the black spacers. I had to put those spacers in and pull the auger back so that the nylon bush sets against the flange (on the motor end).

The wordings were confusing. I was given only the black spacers.

8 Reply by elmoret

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Re: Pipe Nipple twisting

Glad to hear it!

Filastruder - the robust, inexpensive filament extruder
E3Dv6 All Metal Hotend - the premier 3D printing hotend

9 Reply by carl_m1968

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Re: Pipe Nipple twisting

knowack wrote:

This thread is not at all about what (I thought) the title suggests!

***sigh***


I know right, I thought we where going to get a break finally from all the printer jargon..

Printing since 2009 and still love it!
Anycubic 4MAX best $225 ever invested.
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Anycubic Predator, massive Delta machine. 450 x 370 print envelope.

10 Reply by shields1.as

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Re: Pipe Nipple twisting

my pipe twisted as well today when I tried running it for the first time. I know i have the spacers correct and the flange up against the nylon bushing. Im gunna assume that I didnt wait long enough when letting it heat or I didnt tighten the pipe well enough

11 Reply by elmoret

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Re: Pipe Nipple twisting

When you say twisted, did the whole pipe rotate, or did it permanently deform?

If the former, you didn't tighten enough during assembly. If the latter, you didn't wait long enough for it to heat up (20 minutes after 180C has been reached).

Filastruder - the robust, inexpensive filament extruder
E3Dv6 All Metal Hotend - the premier 3D printing hotend

12 Reply by shields1.as

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Re: Pipe Nipple twisting

The first one. So it seems I didn't tighten it enough in assembly.

elmoret wrote:

When you say twisted, did the whole pipe rotate, or did it permanently deform?

If the former, you didn't tighten enough during assembly. If the latter, you didn't wait long enough for it to heat up (20 minutes after 180C has been reached).

13 Reply by shields1.as

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Re: Pipe Nipple twisting

Got tire of fooling with this issue and fixed it for good. Took the filastruder back apart, drilled two holes in both the flange and pipe barrel and then I tap both holes for 10-32 sets screws. Wah Lah no more pipe twisting and it works perfectly now. If anyone would like me to tap yours for ya before you go through this mess holler at me

14 Reply by sue121507

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Re: Pipe Nipple twisting

I have also had the pipe turning problem, but if you let it keep turning eventually the pipe will tighten itself and stop, then you just rotate the whole thing with the flange so the hopper is in the correct position again.

15 Reply by shields1.as

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Re: Pipe Nipple twisting

Just drill and tap the barrell with two set screws and it can't go anywhere.

sue121507 wrote:

I have also had the pipe turning problem, but if you let it keep turning eventually the pipe will tighten itself and stop, then you just rotate the whole thing with the flange so the hopper is in the correct position again.

16 Reply by sue121507

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Re: Pipe Nipple twisting

shields1.as wrote:

Just drill and tap the barrell with two set screws and it can't go anywhere.

sue121507 wrote:

I have also had the pipe turning problem, but if you let it keep turning eventually the pipe will tighten itself and stop, then you just rotate the whole thing with the flange so the hopper is in the correct position again.

My way was easier and I don't have the ability to drill and tap. It hasn't moved since.