Add a curve
Any Bezier or poly curve, or a mesh line. Each point becomes a post.
Draw a curve. Get the queue line.
A post on every point and a belt, rope, chain, rail or panel on every segment. Move a point and the whole barrier follows.
Buy on SuperHive$14.99 until 5 November, then $19.99$19.99
One click. One barrier line.
Shift+A > Barrier > pick a product, and it is done. The slider shows a six-point curve before and after.
Shift+A > Barrier
Pick a product from the menu. Or press Make Barrier in the Barriers tab.
Done
A post on every point and a belt on every segment. Move, add or delete points and the barrier follows.
To place posts by clicking instead, press Draw Barrier: each click puts a post, and the add-on stops it where the next belt would be too long.
14 products, one menu.
Pick one in the gallery on the line. The line takes that product's real-world sizes, and your overrides stay. Every size is stored in a data file and marked verified or to verify.
Belt stanchions
The queue post: a four-slot cassette head, up to four belts per post, one of them its own retractable belt.
Retractable Belt Stanchion
The standard queue post on a flat-topped cone base. The belt wraps the head from its slot.
Disc Base Belt Stanchion
The same post on a slim round disc base, with grooves down the tube.
Square Base Belt Stanchion
The same post on a square steel plate.
Removable Belt Post (Floor Socket)
A post that lifts out of a floor socket, as in airports: only a flush cover plate shows.
Rope posts
Velvet or twisted rope that hangs at its own length between brass posts.
Classic Rope Stanchion
A stepped round base, a ball on a short neck, rope on trigger snaps.
Hotel Rope Stanchion
A flat disc base and a flange head with four hook openings. Ball, urn or flat finial, single or double rope.
Chain posts
Whole-link chains that sag between their hooks and are never stretched.
Plastic Chain Post
A hollow plastic base, a ball cap and a plastic chain of whole links.
Striped Chain Post
Yellow and black stripes on an octagonal base, S-hooks and a two-colour chain.
Metal Loop Chain Post
A stainless tube with welded loops and a polished chain on quick links.
Bollards and delineators
Posts that stand alone, or are joined by a chain where you want one.
Safety Bollard
A steel pipe bollard in safety yellow with hazard tape, on a plate or embedded.
Delineator Post
An orange post on a rubber pad with two reflective collars and a ring or T top.
Rigid rails
A rail between posts instead of a belt. It is cut to each span or built in whole pieces of your own lengths, and the report lists the stock lengths and cuts.
Beam Stanchion
The belt post's head with an aluminium beam hinged between two posts.
Brass Bank Rail
Brass posts with a ball finial and a round polished brass rail.
Panels
A framed insert between posts: acrylic, PVC board or your own printed image.
Panel Stanchion
Clear, frosted or grey acrylic, black or white PVC board, or a printed insert from the image library or your own file.
A sidebar that stays out of the way.
Four panels, one at a time, and a whole look one click away.
Four panels, one at a time.
The Barriers tab is Queue & Barrier Pro, Look, Line and Selected. Click a post or a belt and the sidebar shows only its settings; press Whole Line and the line's Look and Line come back. A panel shows only what the product has: a rope line has no belt width, a rail line has no logos. Rarely used settings sit in folds, and each panel has a ? that opens its page of the guide.
Queue & Barrier ProLookLineSelectedWhole Line
Whole Line: Look and Line
A post clicked: Selected
Looks in one click.
Airport Blue, Bank Brass, Hotel Red Velvet, Museum Black, Construction Site or Event Branded: one click sets finishes, colours, prints and wear, never a size, and each suits every product. Save your own with +, as Look Only or Look and Sizes, and apply it to any line in any file. Rename, export and import your presets. Default puts every setting back to the product's own.
DefaultDefault LookLook OnlyLook and SizesImportExport
The Look menu
Save Preset
The hard parts, done.
The things that take a week to get right by hand: belts that wrap, belts that hang, ropes that keep their length, values that stay put.
Belts wrap the head.
A belt leaves its cassette slot, wraps around the post head and runs tangent to the next post: straight and tensioned, as on a real queue line. Turn a post and the wrap follows, the shorter way round.
Unhooked belts drape.
Unhook a belt and it hangs from its post with its clip end on the floor, a double belt lying stacked. If it would drop through another belt, a clip, a latch, a post or a wall unit, it swings aside and rests next to it.
Ropes and chains keep their length.
A rope or chain is a fixed length that sags between its posts and is never stretched. Place the posts too far apart and the line is drawn taut and flagged, with the fix in the warning. On a slope, Snap to Floor drops every post onto the surface below it.
Move a post, the rope follows.
Drag a post away and its rope or chain hangs shallower, until it is nearly taut; bring it back and the sag returns. The length never changes. Here the last point of a hotel rope line and of a plastic chain line moves out and back.
Change the length, the sag follows.
Length sets every rope hook to hook, and a single rope can have its own. The posts stay where they are and the sag follows, from a deep loop to just short of taut. A chain's Length is whole links, with a readout of how many.
Posts where a belt would be too long.
With Add Posts on Long Belts, a segment longer than the Max Length gets evenly spaced extra posts, and they move as you drag. They are not written into your source: here the line has two points (orange) and up to five posts. Rails, panels, ropes and chains have the same switch: On Long Rails, On Long Panels, On Long Spans.
On Long BeltsOn Long RailsOn Long PanelsOn Long SpansMax Length
Change anything, on any post.
Every value can be set for the whole line, for one post or for one segment, and your changes stay when the barrier is rebuilt or when you add points elsewhere. Click a post and Selected lists its belts: Unhook one, Remove it, Hook a rope Back, or turn a chain link into a Gap. Put Back undoes any of them.
Post HeightFinishRotationBelt colourLogoCap stickerDouble beltRemoveUnhookHook BackGap
Fast to build, fast to drag.
Detail sets how much the whole barrier gets. Auto picks Close-up, Standard or Far from the distance to the active camera, and Preview is what a drag shows while it runs, so a long line stays smooth under your cursor.
AutoClose-upStandardFarPreview
Drag update, 50 bollards4 mswas about 450 ms
Drag update, 50 panel posts20 mswas about 140 ms
Measured headless on Blender 5.1: 50 posts, one vertex moved.
Fit it to the site.
Walls, slopes, straight rows and square corners: what a real site does to a barrier line.
Wall mounts for every type.
A line end can stand on a wall instead of a post, with a fitting made for the product: a receiver or a cassette for belts, a plate or a hook for ropes and chains, a bracket for beams, a flange for the Brass Bank Rail, a rail for panels. An end that would cut into a wall becomes a wall mount by itself (Auto Wall Ends), or click a wall in Draw Barrier to end the line there. Ropes and chains keep their length to the fitting, and rails and panels are cut to fit.
Retractable Belt Stanchion
Disc Base Belt Stanchion
Square Base Belt Stanchion
Removable Belt Post (Floor Socket)
Classic Rope Stanchion
Hotel Rope Stanchion
Plastic Chain Post
Striped Chain Post
Metal Loop Chain Post
Safety Bollard
Delineator Post
Beam Stanchion
Brass Bank Rail
Panel Stanchion
Panels on a slope: Turned, Stepped or Shaped.
Turned panels turn between upright posts. Stepped keeps every panel level and holds it with a clamp on the lower post's tube. Shaped makes each panel to its slope, with upright sides, for permanent installs, and its print stays level or follows the slope. Set it for the line or for a single panel. Drag the slider to compare.
TurnedSteppedShapedShaped Print
Straight rows of bases.
Base Alignment turns the square plates, rubber pads and octagon bases of bollards, delineators and striped chain posts: Follow Line, Aligned to Line or Aligned to World. Rings, T tops and chain hooks keep their facing, so chains hang as before.
Right angles and fixed lengths.
Right Angles Only builds the simplest square path: every turn is exactly 90 degrees and your points are its guides. Draw Barrier shows the squared line as you click. Fixed Lengths builds rails and panels in whole pieces of your own lengths, the long ones first, and the Report counts each length.
Right Angles OnlyFixed LengthsEdit Lengths
Materials, wear and prints.
Real finishes, wear you dial in, and images that print the right way round.
Materials that wear.
Finishes such as polished chrome, brass, satin stainless and black powder coat, a woven belt, and wear you dial in: Wear, Edge Wear, Stains, Stain Size and Tarnish. Or give any part your own material. Drag the slider to compare.
Your logos, stickers and images.
Four image libraries come with the add-on, each a click away in a popup: belt logos, cap stickers, panel images and sign designs. Or load your own files and choose whether they are packed into the .blend or linked. Logos read the right way round from both sides of the belt.
20 belt logos
26 cap stickers
24 panel images
22 sign designs
Print Realism.
A printed panel insert looks like a print behind acrylic: a glass reflection, slight waviness, air bubbles, print dots, colour fringes and optional pixelation. The bubbles are only a surface effect, small raised blisters that catch the light and never turn the print pale. It follows the Detail level and has a master switch. Drag the slider: the same insert from 24 cm, at Detail Close-up.
Glass ReflectionWavinessAir BubblesPrint DotsColour FringesPixelation
Print Colours for AgX.
Under AgX, cap stickers, panel prints, belt logos and sign prints are pre-compensated so they read like their source images. Auto is the default for new barriers. Drag the slider to compare.
Queues, signs and scenes.
A whole queue from a rectangle, and the signs that go with it.
Queues in one go.
Make Queue turns a rectangle into a serpentine queue of posts and belts, and Draw Queue lets you drag the rectangle on the floor. Set Length, Width, Lanes and the lane, turn, entry and exit widths, then move a vertex of the source to move an opening. A line end can stand on the nearest wall.
Signs on posts.
Hang a sign frame on a post: A4, Letter, 11 by 17 inches or your own size, landscape or portrait, double-sided, tilted and turned as you like. Print it from the sign library or your own image, with the same fit modes, Print Realism and Print Colours as a panel.
Made with it.
A museum rope line, a car park, a panel line and the libraries, all from curves.
Museum rope lineHotel rope posts 
Car parkChains, bollards, delineators 
Panel lineLibrary prints 
Cap stickersLibrary stickers 
Belt logosLibrary logos Sign framesSign library
What's coming.
One system at a time, each a free update.
Tape and cones
Traffic cones as a row, barrier tape tied between cones, posts, poles or walls, cones joined by chains and cone bars.
Crowd barriers
Steel crowd barriers and plastic pedestrian barriers on feet, laid end to end with joints, and printed covers for both.
Site and road
Water-filled barriers, the low airport barricade, temporary mesh fence panels with printed covers, road-closure barricades, drums and vertical panels.
Events and venues
Pipe and drape, front-of-stage barriers, expanding barriers, cable museum barriers, queue swing gates and A-frame sign boards.
Plans, not promises: the order and the contents can change. Every update is free for everyone who has bought Queue & Barrier Pro. Permanent fences, walls and gates are planned as a separate add-on.
Questions
How do I make a barrier?
Add a curve (or a mesh line), leave it active, press Shift+A > Barrier and pick a product. A post stands on every point and a belt, rope, chain, rail or panel joins them. To place posts by clicking, use Draw Barrier: each post stops where the next belt would be too long.
What do I need to run it?
Blender 5.1 or newer. The add-on installs as a Blender extension, and everything it needs is in the zip: no other add-ons and no extra downloads.
Does the barrier follow my curve when I change it?
Yes. Move, add or delete points of the curve or mesh and the barrier follows. Follow Source (Line > Source and Merging) turns that off. Moving or rotating the barrier's root moves the source with it.
Do my changes survive when the barrier is rebuilt?
Yes. A value can be set for the whole line, for one post or for one segment, and those overrides stay when the line is rebuilt and when you add points elsewhere. The overrides button in the summary row lists every one of them, and a reset arrow puts a value back to the line's.
Does it work with Eevee and Cycles?
Yes, the materials are Blender node materials. In Eevee, panel glass reflects only the world, because Eevee has no reflection probes here. Cycles shows full reflections.
Can I use my own logos, stickers and panel images?
Yes. The logo, sticker and image rows in the Look panel each have a folder button for your own file, and the library popups have a Custom Image... choice. You choose whether the images are packed into the .blend or linked to the file (Image Placement and Storage). The add-on also brings 20 belt logos, 26 cap stickers, 24 panel images and 22 sign designs.
Queue & Barrier Pro
GPL-3.0-or-later$14.99$19.99Launch price until 5 November$19.99
- One user, the add-on for Blender 5.1 and newer
- Updates through SuperHive, free for everyone who has bought it
Studio
up to 5 seats$59
- The same add-on and the same updates, for a team of up to 5
Requirements
- Blender 5.1 or newer
- Nothing else to install: no other add-ons, no extra downloads
- Cycles or Eevee (in Eevee, panel glass reflects only the world)
What is included
- The add-on, queue_barrier_pro-1.1.3.zip
- The 14 products, the look presets, the logo, sticker, panel and sign libraries and the materials, all inside it
- The user guide, and the source code
Open source
GPL-3.0-or-later. Use it for any work, including paid work, and change it. If you pass a copy on, the same licence and the source go with it.
What's new
Right Angles Only: the simplest square path
- Right Angles Only builds the simplest square path: every turn is exactly 90 degrees, always, and your points are its guides
- The line starts on your first point and ends on your last one (or on its wall, met square). Each segment becomes a straight run along its nearest axis, runs that go the same way join, and a corner post stands where two runs cross, near your turn
- Points along a run are guides, not posts, and are not warned: move them to shape the path. A line that doubles back gets a small jog, a loop closes square at its first point, and a wall fitting slides a little along the wall when the line cannot meet it where it was put (the Report says how far)
- With Fixed Lengths every run is whole pieces but the last
- Draw Barrier shows the squared line live as you click guide points, with dashed lines from guides that are off it