Project to surface fails to update following original sketch change

[r.moss]

I have two instances where I have projected a sketch onto a plane, creating a new sketch.  One was a projection of a sketched circle,  the other a circular pattern of points.

When I change the diameter of the original curve, it does not get updated in the projected sketch!  I don't find the "Project to sketch" menu very intuitive - usually takes several attempts before it works for me - but it clearly did work originally and I didn't do anything to break the link.

It seems to know it is linked because if I try to dimension it, it says it will be  a driven dimension:

If I display all the sketches, there does not seem to be any sketch that could possibly be defining this dimension.  What's going on?

Thanks

Roger

[davebYYPCU]

Not checked the file, will be a few hours before I can do that, but

the picture has green lines, meaning they are locked, for the circle to update, it should be purple.  

You also have some other purple lines, So it worked for them, 

Might help....

[davebYYPCU]

Had some time to check the file, don't know what you want, but here goes.

When I change the diameter of the original curve, it does not get updated in the projected sketch! 

I presume it is the constrained black circle at 57mm (d101) is the correct article you want to update (in the Plate Component, sketch 4,  ??? )

Looks like it started life as 50mm, 

and the pattern of points, needs to update as well. ???  I found some points in Sketch 7, 

They are patterned off a point with a dimension value 25mm so they are going to stay put, and wont update unless you do it manually, or construct a formula.

So if I am on the right track, the dimension to the point, will up date if you make the value of that dimension D101 / 2

The green circle indicated in the pic, will up date if you unlock it, (Unfix constraint) then delete or edit the driven dimension, (50.00) to read, D101

the projected sketch. Which sketch was projected - Sketch 7 ???,

it has a lot of fixed green articles, some purple and blue, how did you actually make the green articles in Sketch 7.

But I may also have missed the intent.

Might help....

[daniel_lyall]

@r.moss I hope someone did not say to you to lock sketchies @davebYYPCU this has been happening caught someone saying this in the fusion360 users group on facebook, they did not like being told that it is very wrong.

[davebYYPCU]

Thanks, Daniel, (not on Facebook)

Puts some context into it, wonder if that person wants to trouble shoot this file for us.

I don't know what happens when you fix a purple line, but when I unlocked it - turned blue, but why would you fix an updatable object?? Weird. 

Later....

[daniel_lyall]

I hope I am wrong this time, if it was well that person no long will get listened to.

[r.moss]

Thanks very much.  I'm having a play with it as per your recommendations - will let you know how I get on.

Roger

[r.moss]

Hi, thanks.  No, I didn't lock any sketches (unless accidentally - not even sure how to!).

Roger

[jeff_strater]

@davebYYPCU, @daniel_lyall, this thread had me worried for a bit.  I had never considered trying to lock a Projected line.  I tried it just now, and as near as I can tell, you cannot lock a projected curve.  If you select just a projected curve, the Fix command is not enabled.  If it is part of a larger selection, it will be ignored.  So, I don't think that is the problem here.

[r.moss]

The objective is to have three aluminium plates with a common external profile and hole pattern.  I'm learning F360 as I go along.

Looking at it a bit more, the circle in top-level sketch 7 was projected from sketch 4 of the "Plate" component.  I've got it updating better now.

The hexagonal hole pattern was defined in sketch 7 and then projected onto Top Lid sketch 2.  At some point it must have become fixed - not sure how but the pattern isn't updating properly.  (I cannot see the 25 mm dimension to the first hole ... not sure where it has gone!). 

I've tried clicking on the sketch 2 points and using the fix/unfix tool (being colour-blind I get a bit confused about whether it is fixed or not, it would be good if one could right-click it and see the status and its history) - either way it does not seem to regenerate to match the original. 

I guess it's probably easiest to just recreate this feature.

Thanks

Roger

[r.moss]

Hi Jeff

I really don't know what I did to get in this state.  I am very much a novice and may not be going about it in the best way, but even so it seems strange that I am locked into this state.  It's not hard for me to delete the holes and recreate them, but it may be an indication of some kind of interesting bug.

The lid is drawn in one quadrant and mirrored twice.  I was debating whether to make the holes part of the quadrant so they are included in the mirror with the other features, or to do one mirror first so that the 6 holes lie within a complete body.  I suspect my problem may result from making a hexagonal sketch pattern, using (if I remember) the 4 "in-body" holes out of 6 and then mirroring them.

Roger

[r.moss]

Hi everyone!  Thanks for your help.

I thought if I started again I might have more luck so I deleted some of the sketches for spigots.  Now that I have regenerated them I find I cannot create a pattern of a pattern of fins.

My original approach of making half-round bosses, cut-outs, hole patterns and then mirroring them seemed inelegant so I mirrored quadrant 1 of this "lid" front/back and combined bodies to make it one body (without the fin).  I also mirrored the fin and combined the two half-fins to get a single full-width fin.  I then made a pattern of 21 of these fins.  I couldn't combine the fins into a "fin body" because they don't overlap, so I combined the whole lot including the lid body.

I am now trying to pattern 3 instances of these fins to give me "fin regions" over the rest of the lid.  I am having difficulty selecting the features - clicking on the fins does not select them.

The only way of selecting them seems to be to select the previous combine in the time line.  This looks like it has selected the fins:

but when I click OK the body is destroyed (disappears from browser as well as not being visible).

(I was hoping to pattern features including the fins, a recessed region and the top spigot all in one go, eventually - that's why I didn't keep the fins as separate bodies - didn't really want to be dealing with 63 bodies).  It cannot really be this difficult to make a pattern...where am I going wrong?   This is actually only part of a larger series of patterns and mirrors; the lid also has a pattern of spigots on its top side (these work OK), and the whole assembly of top lid/central slab/bottom lid, starting from the top lid quadrant, should end up with:

• front/back mirror
• add bottom fin
• pattern 21 fins as a bank of fins
• add top spigot
• pattern fin bank, countersunk region of fins & spigot, 3 instances (so 3 spigots, 63 fins)
• copy/paste with 180 rotation about slab-centre axis to make the lower lid component
• Add countersunk bolt hole to spigot (through all components)
• circular pattern 6 of these around spigot
• make taper hole (revolved cut) through spigot (all components).
• rectangular pattern 3 of these bolt rings and taper holes
• mirror all components left/right

(So ideally I would like to pattern the bank of fins, an extruded cut through them and the top spigot all in one go).

It was mostly working yesterday but now I'm a bit stuck....any tips much appreciated.

[davebYYPCU]

Thanks for the update, and current file, will check it shortly, I may also send Pm depending on the file and workflow, and what I find.

@jeff_strater, I thank you for chiming in, but will say I was concentrating on just the circle pattern request, 

with @r.moss's file and intent, will back track a bit more.

Later....

[davebYYPCU · Accepted solution]

I have found the likely problem, I think you were asking for a circular dependency in the last pattern of the file, cause press Ok, and the whole body went walkabout.

After reading the timeline up and back I figured what you are wanting, but the workflow you use does not work like that in Fusion, as you are finding out.

No detail for the spigot, and no parameters so I think we have drifted off the initial problems with sketch updates.

Your downfall if I can call it something, is trying to avoid a large body list, as you build the model, (Fusion doesn't care about that, its a human thing.)

I have a file that now behaves , as you want it to, up to where you are up to - read the time line, the right hand end steps are important to get the head around.  Will send a PM as well.

Should get you going......

[r.moss]

Thanks, that's really helpful.

Roger