AutoCad 3D :: Winding Stair Stringer - Sweep Command Options
Dec 27, 2011
I need to SWEEP the yellow rectangle in this drawing along the magenta 3DPOLYLINE. This is a stair stringer for a winding stair I'm trying to model. The trouble is that when I SWEEP it the rectangle begins to rotate and ends up all out of whack once it gets to the top.
As I understand it, this is something that AutoCAD does not handle well and something like 3DsMax does. Problem is I don't have 3Ds Max and if I recall correctly there is a way to do this within AutoCAD. I just don't understand the SWEEP command options well enough. I've tried setting Align to No and Twist to the 270° that this thing runs, but each time I end up with the stringer rotated out of place.
I currently have a situation in white my stair handrail mid post wont connect to my stair stringer. I have a C10 stair stringer and am using a modified typer square handrail system I have made. I am sure there is a setting or preference I have missed that is causing this. I have attached an image for reference.
ALSO in the image you can see the top rail does not fully attach to the end post. It sits in the middle somehow. AND that end post sits halfway off the stringer.
I am once again trying to get the hang of drawing a 3D spiral staircase and cannot seem to figure out the SWEEP command properly. I have a channel, or a rectangular tube shape which I want to use for the stringers. If I use a round tube, like when I do the handrail, there is no trouble. But when I use a channel or rectangular tube shape the SWEEP command causes the shape to bank and I end up with an unuseable shape.
In the attached drawing (ACAD-2007 format) I have shown a SPLINE which indicates the path I want the outside stringer to follow.
The options window will not display when typing "options" in the command line or selecting from the drop down. The options menu has to be hidden somewhere because AutoCad will not allow any other commands after typing options until I hit escape. I have tried restarting CAD and rebooting my computer with not luck.
I have been trying to convert this surface (attached file) into a closed volume. But somehow it isnt working.Then I tried to create this figure myself by creating two circles (one at the top and the other at the bottom) and then creating the path for using the sweep command , but it gives a error " sweep produces self intersecting curves".
convert this surface in to a sloid volume or if thats not possible can this geometry be created to the nearest possible approximation.
Ribbon has been acting strange. One example is when creating a sweep the ribbon will not show the mode options to accept or discard changes while creating the sweep path. I have to cycle the ribbon display options to show the X and check options to complete the sweep path. This is only one example of many different odd things happening.
Sometimes when I am simply drawing model lines the selection options for rectangle, circle etc do not appear until I cycle the ribbon display options. This only started in the last week or two.
I am attempting to model an internal 1/8"-27 NPT thread, both the through hole and the tapered part of the hole are modeled, but after I draw the helix and the polygon and orient the polygon to the helix correctly, (or even if I don't, I have tried it) it keeps saying unable to sweep object. I am using Sweep with Alignment with the No option. If I select the polygon first, then click sweep, it works, but rotates the polygon so that what I get ends up looking nothing like a thread profile.
I have tried reducing the polygon radius down to a ridiculously small value, thinking it might have been interference due to a possible trig miscalculation, but with no success, still have the same issue. FYI, I am using a .037" turn height for 27 TPI and a polygon radius of .0214", with a helix small end radius of .177" and large end radius of .189".
sometimes the 'last' entity is whatever the last one in the current view is (the entities you can see on the screen), but sometimes the 'last' item is the very last item created, whether you can see it in the view or not. what is the command to use to switch between these two options?
How to repeat a command with options used previously? For example, I create Arc with "Start End Radius". If I repeeat command pressing spacebar or enter, an arc creates with options by default ("3-point").
I would like to be able to extrude an object then do a subtract or something similer, then somehow put the subtract on a layer so if i hide said layer the extrueded object will be showen as if it never had the subtract applyed. But if the layer is show agean then the extrued will have a hole in it agean.
P.s. for an example of one thing this could be used for, modeling wrenches with difrent shaped grips but the same handle. Without just making multiple copys of the handle.
I make use of thie BATTMAN command quite a lot as I set up and manage my drawings for my company, through this I am editing attributed information and have seen the options 'invisible', 'verify' and 'preset' are available. Confirm the functionality of this options and how they affect the attribute ?
I have a pic of a friend of mine riding his motorcycle on a winding road. I was trying add his name to the road behind him and make it look like it was painted on the road. I tried to draw a path down the yellow center line and type text but could not really get the right perspective. I also tried just doing individual letters and transforming them (distort, skew, perspective, etc) but I cannot seem to get them to look correct. By themselves they look ok, but not really in line with the other letters around them. I've tried looking for tutorials but I cannot come up with anything. I do not doubt that I am just not searching the correct terms or something.
Is there any easier way to do what I am wanting to do?
Solution to getting a horizontal sweep to miter with a vertical sweep? Or maybe there is a way to pick a path? A feature in the full version that Autodesk deemed unnecessary for LT.
getting a horizontal sweep to miter with a vertical sweep? Or maybe there is a way to pick a path? A feature in the full version that Autodesk deemed unnecessary for LT
I am looking for a way to set a couple options in the Manual Tune window from the Performance Tuning window (3DCONIG Prompt). More specifically I want to be able to:
Check what the setting for Enable hardware acceleration is (so it can be restored back)Set Enable hardware acceleration offReduce the number of tessellations to cacheReduce both the Surfaces, and Curves tessellation How would I do this from command line? My ultimate goal here is to run these commands in .NET.
how to make a partial open (saddled) and partial box (housed) stringer?
The only difference is that the open treads do not extend but are the same length as the box treads.Partial_Open_into_Box_Stair.gif Using Autocad Architecture 2012.
I have a building with 2 levels & I have one stairwell. My 2 levels are in a shell.dwg - (first floor level & second floor level). I have a simple stair & landing, which is an element. I insert that element into the first floor level. Everything is fine there, but when I set up a view drawing with the shell (construct) & stair (element in construct) for the second level the stair is diplayed as if it is going up from the first floor level - I need it to show going down from the second floor level. Is there way to show that with one stair?
What we have done in the past is to not have levels, 1 construct for first floor & another for second floor - creating a stair styles for each floor. But when you do a model you have stairs on top of each other (not really using the software like we should). So my question is how do I have 1 stair for 2 different levels & show it correctly for each level. When I set my cut-plane height for first floor level - looks great, but when I set it second floor level - either it remains the same obviously or when I uncheck the override display config. in other on the display tab in the style the stair disappears. I'm trying a new way of creating models/plans & I can't think on how to create the stairs correctly. What am I missing in order to look correctly in plan view without making 2 stairs.
how I keep the three risers shown in the image below, but extend the landings on the first and third run to avoid creating the angled corners. The angled corners show up when I manually edit the edges to bring the second run width down to match the first and third run width.
If I extend the landings, it tends to push one of the second run risers around the corner to the third run, and that screws up my design.
I have set up a view with a stair that goes from the first floor to the second floor. The stair has been asigned to the first floor level only. It appears as I want it in the view. However, when I drag the view into my sheet file, the stair disappears and only the path shows, without the individual nosings.
I am creating a set of parametric stairs. All of my constraints are in place for my 2 main work points. I am now trying to make an associative path array to depict the stair treads. Path array works great initially, however when I change my variables for stair height, my stair treads tilt with my work line in such a way that they're no longer parallel to the floor.
The angle of the stairs must be variable as it will change from one set of stairs to another. All that said, I am wondering if there is some variable or command that will make the treads retain their ucs orientation regardless of the angle of my path line. I've tried every option while creating the array with no luck.
