real easy nb question

[art_turner]

make a 1 x 1 x 1 block part. place it into an assembly. unground it. move it. mate one face to the xy plane, then another face to the xz plane. it still moves, it needs another constraint. why does the last constraint, the third face to the third plane throw an error? i can mate the edge to the plane, but i need to understand why you cant mate the faces of a block to the origin. it does not seem to me overconstrained or in conflict.

not afraid to ask the dumb questions.

[Anonymous]

Make sure that you need a standard mate constraint and not a flush
constraint (look at your arrows on the preview)


wrote in message news:5994108@discussion.autodesk.com...
make a 1 x 1 x 1 block part. place it into an assembly. unground it. move
it. mate one face to the xy plane, then another face to the xz plane. it
still moves, it needs another constraint. why does the last constraint, the
third face to the third plane throw an error? i can mate the edge to the
plane, but i need to understand why you cant mate the faces of a block to
the origin. it does not seem to me overconstrained or in conflict.

not afraid to ask the dumb questions.

[japike]

Works fine here! No errors.

Jeff

[art_turner]

i see. because i am positioning the block on the negative side of one plane, and the normal side of the other two planes, i need a mate mate flush. thank you.

[Anonymous]

Check to make sure withing :Application Options>Addembly>Endble constraint
redundancy analysis: is de-selected.

--
Dell 670 dual Xeon - 3.2
3gb memory, SCSI320-15k rpm
XP-Pro, sp2
Quadro FX3400: Driver: 169.96 Direct3D
IV2009-Pro
SpacePilot Rel V: 3.6.7 Dvr V: 6.6.1 Firmware 3.12

wrote in message news:5994165@discussion.autodesk.com...
Works fine here! No errors.

Jeff

[Anonymous]

My pleasure....as the old saying goes; the only truly dumb question is the
one we are too afraid to ask........:)


wrote in message news:5994256@discussion.autodesk.com...
i see. because i am positioning the block on the negative side of one plane,
and the normal side of the other two planes, i need a mate mate flush. thank
you.

[Anonymous]

Blair, that is the single best thing I have found for those of us who don't
pick the perfect constriant every time.....:)


"Blair Stunder" wrote in message
news:5994276@discussion.autodesk.com...
Check to make sure withing :Application Options>Addembly>Endble constraint
redundancy analysis: is de-selected.

--
Dell 670 dual Xeon - 3.2
3gb memory, SCSI320-15k rpm
XP-Pro, sp2
Quadro FX3400: Driver: 169.96 Direct3D
IV2009-Pro
SpacePilot Rel V: 3.6.7 Dvr V: 6.6.1 Firmware 3.12

wrote in message news:5994165@discussion.autodesk.com...
Works fine here! No errors.

Jeff

[jandrews]

You can do this more efficiently by mating two axes instead of three planes. x to x axis and y to y axis fully constrains it.

[Anonymous]

Now you gotta be real careful when doing that because in IV's little brain
that thing isn't fully constrained.... it can still roll (flip) 180 about
the X axis because axial mates are ambiguous.

This scenario can make working with PosReps and Flexibility quite
challenging esp. when you touch a sub and it completely explodes in all
directions to infinity.

QBZ


wrote in message news:5994360@discussion.autodesk.com...
You can do this more efficiently by mating two axes instead of three planes.
x to x axis and y to y axis fully constrains it.

[Anonymous]

Ya gottat love it when that happens.....makes me feel warm and fuzzy all
over....

Constraint to origin planes is the only way I would "ground" my first
part....in fact that is what Inventor does when it grounds your first part
placed in the assembly, except that it just aligns the assy origin planes
and the first part origin planes then grounds it.

"This scenario can make working with PosReps and Flexibility quite
challenging esp. when you touch a sub and it completely explodes in all
directions to infinity.

QBZ"

[jandrews]

Hmm, good point....oops, my entire assembly flipped over lol.

[Anonymous]

It helps us that suffer with "CDS" (Constraint Dyslexia Syndrome).

--
Dell 670 dual Xeon - 3.2
3gb memory, SCSI320-15k rpm
XP-Pro, sp2
Quadro FX3400: Driver: 169.96 Direct3D
IV2009-Pro
SpacePilot Rel V: 3.6.7 Dvr V: 6.6.1 Firmware 3.12

"Albert Allen" wrote in message
news:5994305@discussion.autodesk.com...
Blair, that is the single best thing I have found for those of us who don't
pick the perfect constriant every time.....:)


"Blair Stunder" wrote in message
news:5994276@discussion.autodesk.com...
Check to make sure withing :Application Options>Addembly>Endble constraint
redundancy analysis: is de-selected.

--
Dell 670 dual Xeon - 3.2
3gb memory, SCSI320-15k rpm
XP-Pro, sp2
Quadro FX3400: Driver: 169.96 Direct3D
IV2009-Pro
SpacePilot Rel V: 3.6.7 Dvr V: 6.6.1 Firmware 3.12

wrote in message news:5994165@discussion.autodesk.com...
Works fine here! No errors.

Jeff