Hatch preview shows correct hatch but creating the hatch goes outside boundaries

[Anonymous]

I am trying to hatch a floor plan with blocks, such as window & door blocks. The hatch preview shows a perfect hatch, which stays inside the boundaries of the room. However, when I click to create the hatch it suddenly creates a hatch that goes outside of the borders of the closed boundary. 

It looks like the problems occur through the window and door blocks particularly, but I cannot tell exactly whats wrong. This floor plan has been copies and mirrored. After searching the forums for days, i have tried all of the suggested commands such as setting MIRRHATCH from 0 to 1, using REGEN before hatching, using less dense hatches and stetting other hatch command variables from 0 to 1 or 1 to 0, but nothing works.

I deleted everything off of my file except the one room i wanted to hatch, purged all unused layers, to see if my file was too big and was causing issues. I also tried using current as well as specified hatch origin. Tried using bhatch instead of hatch. No luck still.

My hatch settings have island detection checked, and island display style on "outer".

I'm lost as to why the preview shows it correctly but then when creating the hatch it blends outside boundary, says too many objects to hatch, or even no boundary found sometimes. 

Any help would be extremely appreciated.

[john.vellek]

Hi @Anonymous,

I am sorry that you are having hatching issues in AutoCAD. Which version of AutoCAD are you using? Can you attach a sample file with the blocks in it so I can see what might be going on?

I would like to see if the boundary is truly closed or if there are other issues such as the geometry being too far away from 0,0.

Please select the Accept as Solution button if my post solves your issue or answers your question.

[john.vellek]

Hi @Anonymous,

Did you figure out your problem with hatching? If not please provide me with some details and a sample file.

[Anonymous]

Hi John- 

Attached is a sample file of what occurs when I try to hatch a hardwood floor pattern in the family/dining/kitchen space. It seems to select many other items outside of the closed floor plan, including other rooms like the office. Sometimes this happens when I try and even hatch one of the exterior walls.

[pendean]

Freeze the layers of objects that do not need to be there, leave only the layer(s) needed to identify the hatch boundary and nothing else, and try again. It will work just fine.

[Anonymous]

Thanks for the help!

I have many layers in my file- is there a quick way to turn them all off? And then I will turn on the 3 layers I need on.

Also, is there any reason why I need to frz my layers? 

[pendean]

LAYFRZ command not an option?

Freezing a layer removes the objects on hat layer from being selected: OFF does not do that.

[Anonymous]

My apologies-  I meant is there a way to freeze them all. I dont see a LAYFRZ(ALL) option. Individually freezing all of the layers besides the 3 I need is very tedious

[john.vellek · Accepted solution]

Hi @Anonymous,

Thanks for the drawing file.  I ran AUDIT and it found quite a few errors. I also then ran PURGE and -PURGE>Regapps.

After that, I created a new layer state (LAS).  I see that you are familiar with this command as you already had quite a few in your file.

Then I used LayFrz to eliminate some layers from the screen to make the area selection easier for the Hatch.

I had to add a couple of temporary lines to help define the boundary for the hatch and then I was able to apply a wood pattern.

Lastly I used LAS to restore my layer state that I had created.

This process can be pretty quick and I hope this helps.

Please select the Accept as Solution button if my post solves your issue or answers your question.

[Anonymous]

Thanks for the help John! Running Audit fixed 23 errors... wow. 

I'm actually unfamiliar with the LAS command but I can do some research on my own if it's not too complicated.

I find that using temporary lines to break up the hatch definitely helps if I am hatching a large open room/space.

[rudhamstile]

I don't regard this question as to have been fully answered. Why does the programme simply lie when it previews? Its a classic groan when hatching in Autocad. Its seemingly schizophrenic behavior is probably the biggest cause of time wasting ever to exist in Cad.

[Anonymous]

Yes I want to know why Autocad is lying 

[pl.fischer68]

I have the same issue, if the preview is correct it should act normally. Did anyone found a solution?