Why is my print slanted to one side? layer slipping

[Todd]

I was printing last night, and things were going pretty well, but the
part was moving to the left each layer. The cross-section of the
resulting shape would look like \\ instead of || and I was sad. I put
foosball table silicone grease on the rods for the X axis (and the Y
just for kicks) and it fixed the problem.

[Marty McGuire]

It sounds like the axis was losing steps as it moved.  There are a handful of things to try when this happens:

• grease the axes (you did this and it worked, yay!)
• the belt may be slipping - tighten (or in some rare cases, loosen) the offending belt
• the pulley that moves the belt may have come loose. use the tiny hex key to tighten it. everything might have to be taken apart before you can reach it. :/
• the stepper motor drivers may not be receiving enough power - check their voltages (not sure this applies to a Cupcake CNC)
• the stepper motor may be failing (super rare).

Those are some things I've seen the MakerBot support guys deal with.

--Marty

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[Todd Blatt]

My second step was going to be to fuss with the tension of the belt, but I didn't know if i should make it tighter or loser.  I'm glad the grease worked.


Todd Blatt
tbl...@gmail.com
@tblatt on twitter
443-599-9196
www.bytestobits.com

[Todd]

New grease is available... it's actual 3-1 oil and it's in the orange
bottle near the bot. currently all axes are lubed and the bot seems
to be working pretty well.

On Dec 16 2011, 12:04 pm, Todd Blatt <tbl...@gmail.com> wrote:
> My second step was going to be to fuss with the tension of the belt, but I
> didn't know if i should make it tighter or loser.  I'm glad the grease
> worked.
>
> Todd Blatt
> tbl...@gmail.com
> @tblatt on twitter443-599-9196www.bytestobits.com
>

> On Fri, Dec 16, 2011 at 11:56 AM, Marty McGuire <schmartiss...@gmail.com>wrote:
>
>
>
>
>
>
>
> > It sounds like the axis was losing steps as it moved.  There are a handful
> > of things to try when this happens:
>

> >    - grease the axes (you did this and it worked, yay!)
> >    - the belt may be slipping - tighten (or in some rare cases, loosen)
> >    the offending belt
> >    - the pulley that moves the belt may have come loose. use the tiny hex

> >    key to tighten it. everything might have to be taken apart before you can
> >    reach it. :/

> >    - the stepper motor drivers may not be receiving enough power - check

> >    their voltages (not sure this applies to a Cupcake CNC)

> >    - the stepper motor may be failing (super rare).