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@SCHNIPPLES please upload your-sample.dwg

Best way to clean a difficult file is WBlock, not sure what had those bloated like that.

What are the computer specifications? What OS? Lines, LWPolylines, 2DPolylines or 3D Polylines I doubt there is a permanent fix except to repair the drawings that have the issue, though it could still be an issue with your computer graphics. If it's polylines, try exploding them to lines, then PEDIT them back to LWPolylines, also try an Audit on the affected drawings. You could post an example drawing that has the issue, maybe it will show on other's computers if it's a .dwg issue.

The OP is using AutoCAD LT 2026 and cannot use a .NET AFAIK. You are new so I removed your link to YouTube.

Experience my plugin written with .NET API.

If you want to load lisp as it is, then you shouldn't localize that first (defun) along with other variables... Only if you push it (that first defun) in main body of command function (defun c:) you should localize it, wich is what I suggested... As you observed CAD won't recognize localized defun if it's out of main command function and bahave like global variable, though as if you had globals they should never be localized as they also won't be recognized...

@CivilTechSource Like you, It is a good idea to have a library of functions that you use all the time, in my Excel lisp there are 41 defuns so just copy and paste the ones I want to use, same with my Multi lisps for dcl's. often set them to write a dcl and then convert that file to dcl lisp code, like 3 lines of code to make a dcl. I have a VLAX lsp open all the time in my Notepad++ so again copy paste a function. I have a lot of lisp's saved as a function name eg Sort.lsp has various sort methods in it. I use windows "Findstr" a lot in a bat file so can look through an entire lisp directory for a keyword, identifies lisp files with that key word and copy and paste what I want out of existing code. You can in a lisp load an entire other lisp program and continue and use functions in that new lisp, I mention it as you could have little tiny lisp's like your "make layer.lsp" and just load when required. eg (if (not ah:butts)(load "Multi radio Buttons.lsp")) so you could have a few load lisp's at start of code saving lots of copying and pasting. Interested what others do.

For me simplest and quickest is use a wipe out in the block, set to background then will auto obscure line underneath. Hopefully the result you want.

@BIGAL Please share me. You can reach me at WhatsApp +60129736757

Hi All, just wanted to thank everyone again for helping me so far in my lisp journey! As a token, I worked on a VS Code extension for AutoCAD snippets. This so it can allow users to type in quickly common functions the use all the time (e.g. search layer if dont exist create layer and so on). So far I have added the comment section. Happy to receive feedback and suggestions. Thank you https://marketplace.visualstudio.com/items?itemName=CivilTechSource.autocad-lisp-snippets

There is no problem in drawing that type of break it just involves a custom lisp to break the lines and draw wiggly lines, the amount of wiggle may have a couple of FUZZY values or scale factors. even a block just scaled to fit. To write your own lisp and its a good task to start learning, Draw a line say 1 unit long vertically one end at 0,0, the turn off snap and draw a wiggly Pline. Use list select pline and copy out the co-ords, to notepad You have 1/2 your code now, just make the points, use a scale factor on the Y value to adjust the points for the 2-3/8 then can draw the pline at correct position. Ok now the easy answer make a block and again draw a line, do the pline, erase the dummy line, save block. you can insert the block and scale it to suit the length required. insert block twice, after breaking line. I would turn second insert upside down so looks a bit more random. Ok I have avoided line work on any other angle than horizontal, on purpose, you can pick a point on 1st line break it, then perp to other line and auto break it also. This involves getting linework details like angle of lines. The actual pline could have randomness added to it so no 2 plines are quite the same by in example vertical, adjusting the x value within a range so 2 breaks don't touch. So have a go make a block and your homework is in lisp, Getpoint pt1, Polar for 2nd point, based on horizontal line, then Break using 2 points, getpoint again Pt2 using perp , break other side. Simple block answer.

Yes is the answer to a lisp but it will cost you, but you will get much more than just what you have asked for as I have different lisps for Concrete slab design. More than is shown in this toolbar. Two solutions needed, it is not that hard to do a dimension using correct style turn off all the extensions etc and you will have a double arrow dimension, 1st step. Don't really need code. Pick 1st point then use perp for second point and over ride dimension with "A7" etc. Can do a mini defun in lisp if needed. You should be using a dwt "drawing template" for your work so the Dim style would be there already. Second step is a line with donuts at intersection, you use (SSGET "F" pts (list (cons 8 "REOBARLAYER")))) where pts is (list pt1 pt2) you can then draw a dummy line and use the vl Intersectwith method to find the intersecting points and draw donuts. That is your homework plenty of examples about SSGET and Intersectwith.

Hi, first of all thanks a lot, i am only beginner in my LISP journey, and for me its hard to find good info in my native lang, so any usefull help is excelent. About UCS it worked fine, lw_orth now creates line in any UCS. (command "_,ucs" "_w") and (command "_.ucs" "_p") worked out! About regular_draw i tried to implement stuff you descriibed in post, but after that console says next: I setted SNAPUNIT to 1.0,1.0 as you said. Could you help me where am i wrong in adjusting regular_draw comand, it seems what i was looking for

With LWT ON, lineweights visually change thickness when zooming in/out. Toggling LWT OFF → ON fixes the display temporarily, but the issue returns on the next zoom. Important: this does NOT happen with all files. Some DWGs display lineweights correctly, while specific files consistently show the issue. The problem appears in both Model and Layout. Plot/PDF output is always correct, so this seems to be a screen redraw / zoom rendering issue, possibly file-related. Tested with no success: LWT/LWDISPLAY, LINESMOOTHING=0, REGEN/REGENALL, Model vs Layout. Please, if anyone has encountered this behavior and found a permanent fix in AutoCAD for Mac 2022 (without resetting preferences or upgrading), I would really appreciate your help.

@Isaac26a One option you may want to consider outside of coding as well is an inbuilt AutoCAD command called QSELECT. You can select what's on the screen. The in the dialog box that appears play with all the filters available. For example select all lines the are equal to 90degrees.

Found this little gem, I guess perpetual license means F - Off, buy our subscription

I went through the links thoroughly, thk you for that. Its not allowing me to install

Many thanks.

Hello CadTutor fam, I am a complete newb at creating Lisps. I am trying to create a lisp that automatically places a dimension between two parallel lines (this is a repetitive task in my field). I've attached the lisp I've got so far, but it only places a line perpendicular to the selected lines. Can someone please help out/point me in the right direction? tpdim.lsp

Being as it is an older non-supported version, your options are limited. There was a lot in those 2 links, what did not work?

I WBlocked them. new Lines and arcs.dwg new font.dwg

Hi Team, I wish to create a Lisp code for slab rebar detail that has the following conditions, Legend = The perimeter green line represents the edge line of the slab, the yellow dashed line represents the internal beam where the slab is continuous. Clouded with orange colour is the slab rebar. Clouded with purple colour is the arrangement of slab rebar in that direction. Condition 1 = User to point 6 locations to create the slab rebar length. The starting point of the rebar will be the location at last 33.33% or one-thirds length of the 1st and 2nd location. It applied the similar for 3rd and 4th location which to determine the end point for the rebar length, as shown in item 3 in the picture. Subsequently, to point 5th and 6th location to create the length of the rebar arrangement (arrow), as shown in item 2 in the picture. This will allow for creation in both vertical and horizontal directions. To allow the user to point the location without straight alignment. Condition 2 = User to point 6 locations to create the slab rebar length. If the slab rebar is started at the slab edge (green colour line), user to type "x" and point 1st location, this represents the started point of the rebar, as shown in item 2 in the picture. Automatically, 2nd location to be skipped and continues with the 3rd, 4th, 5th, and 6th location. If slab rebar ended at slab edge (green colour line), user to type "x" and point the 3rd location and 4th location to be skipped. - The start and end of the slab reber shall finish with the 90 deg bent with 100mm length. - Create the default text A7 (T) at the centre. - Create solid circle with 100 diameter at the intersection of the line as shown in the picture. - The line layer to follow the layer as per the drawing attached. Kindly advise the lisp code above. Thanks. Drawing1.dwg

Something like this!? ; ***************************************************************************************************** ; Functions : PLBRJ ; Description : Breaking POLYLINE at blocks insertation points and joined into the one POLYLINE ; Author : Saxlle ; Date : January 19, 2026 ; ***************************************************************************************************** (prompt "\nTo run a LISP type: PLBRJ") (princ) (defun c:PLBRJ ( / ent joinList ptlist ss len spt ept i breakPoint) (setq ent (car (entsel "\nSelect the POLYLINE:")) joinList (list) ptlist (mapcar 'cdr (vl-remove-if-not '(lambda (x) (= (car x) 10)) (entget ent))) ss (ssget "_F" ptlist (list (cons 0 "INSERT"))) len (sslength ss) spt (vlax-curve-getStartPoint (vlax-ename->vla-object ent)) ept (vlax-curve-getEndPoint (vlax-ename->vla-object ent)) joinList (append (list spt) joinList) i 0 ) (while (< i len) (setq breakPoint (cdr (assoc 10 (entget (ssname ss i))))) (command "_.BREAK" breakPoint "_f" breakPoint breakPoint) (setq joinList (append (list breakPoint) joinList)) (setq i (1+ i)) ) (setq joinList (reverse (append (list ept) joinList)) ss (ssget "_F" joinList (list (cons 0 "LWPOLYLINE"))) ) (command-s "_PEDIT" "m" ss "" "j" "" "") (prompt "\nThe POLYLINE was broken at blocks insert points and joined into the one POLYLINE!") (princ) )

How can I draw this kind of break line on autocad. See file attached. Thanks. 20260119_090353.heic

thks for the reply, that did not work, the 2026 trial version installed without issue. I posted this issue in the autodesk forum, I looked today the moderator removed it