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Cutlist and Layout from Sketchup

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Blog entry by daltxguy posted 2247 days ago 168080 reads 165 times favorited 317 comments Add to Favorites Watch

If you’re a fan of Sketchup for creating woodworking models, then the next obvious step is to use Sketchup to help you create cutlists and layouts. Sketchup plugin Cutlist 4.1 does just that. CutList 4.1 sketchup plugin helps you determine how much of each material you need to produce your design, taking into account nominal sized lumber with allowances for finishing to final size. Then it goes one further and lays out all of the pieces on boards or sheet good sizes of your choosing. Then you should be all set to head for the lumber yard to get all of the materials that you will need with no return trips.

CutList 4.1 was beta tested by our very own Lumberjocks and is now ready for download.

It’s being released exclusively to Lumberjocks first. You can download v4.1.10 here . This is a completely free plugin. This plugin has been around since about 2005 but continues to be maintained and enhanced. It’s got the look and feel of old Woodsmith magazine cutlists and layouts. A very early version v3.3 was reviewed in the Fine Woodworking blog 'Design.Click.Build.' by Dave Richards and a later follow up.

Note that there is now a forum on Lumberjocks for further discussion.

Cutlist 4.1 has been tested with both Skletchup 7, Sketchup 8, SU2013 and SU2014 on both Macs and on Windows PCs.

Installing. There are now 3 ways to install this.

Method 1 (easiest) Get and install it from Sketchup Extension Warehouse
  • Start up Sketchup
  • from Sketchup choose: Window->Extension Warehouse
  • Search for and select ‘CutList’
  • click on install ( big red bar on top right)
Method 2 (easy) Download and install it using the Sketchup extension installer
A relative foolproof way to install is now available with the latest versions (from v4.1.6 and up).
  • Download it from link above
  • Start up Sketchup
  • from Sketchup choose: Window->Preferences
  • click on ‘Extensions’
  • click on ‘Install Extension’, hen navigate to and select the .rbz file you just downloaded
Method 3 (if all else fails) This is a two step process and more error prone
  • The file is a .rbz (a zipped ruby source) file. Extract the entire contents into your sketchup plugin directory not just the startup ruby script (srcutlist.rb). There is also a folder called srcutlistui which contains everything else it needs to work properly. The exact locations of the directories required for Sketchup plugins for Windows or Mac are found documented further down in the blog.

Running on a Mac. This is functional. Only the html output window for the layout does not work because of issues with the Safari browser, however, there is a workaround using the SVG export.

Someone in the forum asked a great question which I will repeat here:

Q. What is the point of the cutting diagram?

A. Why indeed would you want a cutting diagram? There are a few reasons:
  1. Regardless of whether or not you have a cutting diagram, eventually you are going to have to cut some wood to get a project built. How many boards do you need to buy? If you go by the board feet measured ( or calculated by something like the cutlist plugin) you’re going to find that it falls short. Why? because when you to to cut the pieces out of the board, you’ll find that you will inevitable have waste. By having the cutting diagram, you can see how much waste there is going to be and you know how much to get when you to the lumber yard.
  2. You’ve got a lot of parts to cut and you want your parts to be as accurate as possible before you even do anything else to the pieces. Ideally you want one setup for each size of part, so that you can cut each of the parts which are the same size at the same time. The cutting diagram lets you visualize how parts may be laid out to minimize on the cuts and the number of setups.
  3. Ok, you’ve decided to build your project out of sustainably harvested plantation teak. It’s selling for $50/square foot(!) for 3/4”. You might be interested in using those $200 boards as efficiently as possible. A cutting diagram may also be used to minimize waste. Even if you have waste if you could have a larger part left over which you could reuse for another project vs having a lot of offcuts, you’ve saved yourself some money and you are using the planet’s resources efficiently and responsibly.

So, to sum up, it gives you more accurate project requirements, it minimizes setup time and shop time spent cutting the boards while increasing accuracy and finally it helps to use the resources as efficiently as possible.

Finally here are some screen shots in case you still can’t quite figure out what it does or why you would want it or can’t imagine what it looks like.

Starting up cutlist. Highlight your project and select CutList from the plugin menu. Make sure all of the parts in your project are named and are either a component or a group. ( Nested components or groups are handled ok as well)

The screen that comes up allows you to select your cutlist options from the type of output you want, what you want to have included in your parts list, which parts are solid wood parts, which are sheet goods parts and which are hardware

and the next page allows you to select the layout options. There is a general options section, a tab for board options and a tab for sheet options.

Here is a sample of cutlist output. This is the cutting list in html format. This page can be printed.

If you scroll down, then there is a summary of the board feet and the materials and sheet parts and hardware are broken down to their own lists with their own summaries

If you selected the layout output, then another window will open and place all of the selected parts on boards of your choosing in a layout which minimizes waste.

Sheet parts layout is placed on the sheet sizes you specified.

There’s lots more. There is built in help on each option. Just click on the blue ? next to the option.

Feel free to pass along any comments, questions, enhancement requests or bug reports. I’m committed to maintaining the plugin and make it as useful as possible.

-- If you can't joint it, bead it!



317 comments so far

View Damian Penney's profile

Damian Penney

1140 posts in 2623 days


#1 posted 2247 days ago

Fantastic! Can’t wait to try this out :) Thanks.

-- I am always doing that which I can not do, in order that I may learn how to do it. - Pablo Picasso

View Damian Penney's profile

Damian Penney

1140 posts in 2623 days


#2 posted 2247 days ago

Just saw your post regards the algo (I wish LJ would automatically email with new comments on posts I’ve replied to). I started down this path a while back and had hours of fun with the packing algos (not having a degree in math) there is a lot of info on the subject and they are all 2DBPP algos, 2D Bin Packing Problems. It’s a common problem. I gave up when I couldn’t write an algo that beat Cutlist Pro. Have you compared yours to Cutlist Pro?

Maybe you can understand what these guys are talking about A Unifed Tabu Search Code for
Multi-Dimensional Bin Packing Problems
from the sounds of it you are using a best fit first, sort pieces by max height/width then add them in a row

These guys also put together an overview of the various approaches you can use which I found pretty useful.

Anyway, hope these links prove interesting and thanks again for al the hard work you’ve put into this.

-- I am always doing that which I can not do, in order that I may learn how to do it. - Pablo Picasso

View PurpLev's profile

PurpLev

8476 posts in 2281 days


#3 posted 2247 days ago

no go on a mac = that is a :( indeed… is your UI based on the browser libraries?

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View Chris 's profile

Chris

1867 posts in 2623 days


#4 posted 2246 days ago

Looks Great Steve!.... I have only recently started in on Sketchup and will be looking at this as a next step for any designs I develop.

Thanks!

-- "Everything that is great and inspiring is created by the individual who labors in freedom" -- Albert Einstein

View daltxguy's profile

daltxguy

1373 posts in 2546 days


#5 posted 2246 days ago

Hi Damian,

Thanks for the paper.

It looks like the 2D version of the ‘Tabu’ algorithm is pretty much exactly what I did, only I thought it was intuitively obvious from the way I would lay out the pieces as a woodworker. I developed my idea of how to implement it 15 years ago, beating these guys by a decade. The idea, I thought, was trivial, the implementation is slightly more interesting. I just didn’t get around to it and I didn’t write a paper ( maybe I should have). The only thing they’ve added in ‘TABU” is the ability to do 3D ( which is a simple extension of what I do), the ability to reposition pieces for a potentially better fit ( which I planned to do but then thought that it wouldn’t add a great deal of value), and the ability to use different sized bins ( the infrastructure for this exists in my version of Cutlist, but I left this for later).

What he calls ‘bins’ we call boards or sheets.

The 3D packing problem could be useful for layout a well, for resawn boards. It could also be extended to sawmilling. In fact this is being done – some interesting technology exists today in sawmilling where logs are scanned or x-rayed in real time and optimal cuts are computed taking into account structural defects, quality of wood, log size and market demand. I think this is all good use of technology, better than building weapons.

I haven’t compared with CutListPlus. I’ve got a very old trial copy which I’ve never used. I think the trial version has limits on how much it would lay out. If anyone has CutListPlus and can compare, I would be interested to hear any results.

-- If you can't joint it, bead it!

View daltxguy's profile

daltxguy

1373 posts in 2546 days


#6 posted 2246 days ago

Hey Purp,

Sorry about the Mac thing. Everything I’m doing is standard stuff. I’ve even tried the html pages in Firefox, MS IE and Safari and they all work fine and all work the same way. The issue seems to be with Sketchup’s insistence that Windows Sketchup uses MS IE and Mac Sketchup uses Safari regardless of what your default browser is AND with Safari, Sketchup’s interface ( The WebDialog class) to a web page has some issues. It doesn’t help that apparently Sketchup blames Safari, Safari blames Sketchup.

The only solution would be to be able to pick a browser in Sketchup but that’s not currently possible. – maybe I’ll lobby the Sketchup folks for this feature to be in SU7.

-- If you can't joint it, bead it!

View Chris 's profile

Chris

1867 posts in 2623 days


#7 posted 2246 days ago

Steve,

I have the current Cutlist Plus; Your solution appears to go head 2 head with it. I will install yours and give it a run!

Ok?

-- "Everything that is great and inspiring is created by the individual who labors in freedom" -- Albert Einstein

View daveintexas's profile

daveintexas

365 posts in 2508 days


#8 posted 2246 days ago

Looks like a good addition to the program. And I see Dave Richards has joined in, he is great with sketchup.

Not wanting to hijack the thread but I have been wondering when Sketch up will go metric ? Maybe a plug to be available?
I ask, because I and some others have been doing some shop work using metric measuring and I can see some real advantages.
Anyway-thanks for posting this blog

View daltxguy's profile

daltxguy

1373 posts in 2546 days


#9 posted 2246 days ago

DaveR – I’ll get these changes made asap. Thanks for stopping in and taking a look and the quickie review on Design.Build.Click. You may be disappointed with the printing capabilities of the layout portion, though. Can’t print directly from the output window – quirk with the javascript I was using to produce the graphics and MS IE. This still needs improvement. I threw in the the ability to produce a SVG file to try to address this. SVG output can be read by Firefox ( MS IE is useless at it) and then printed but it’s still not perfect. If you have another SVG reader, then I suspect it will be better. The advantage of SVG is that it’s scalar ( the S in SVG) ie: you can zoom in and out – should make it easier to see the small parts laid out.

Chris : Give it a shot buddy. I’d be real curious. Btw, there is a known issue with the csv output and CutListPlus 2009. I don’t have the exact details, which is why I couldn’t fix it….but if someone can tell me, I’ll make the changes.

Daveintexas : Metric works in Sketchup already and this plugin supports it too and it’s been tested with metric. I work in metric measure but I like to show total volume in board feet, so that is supported too. ( The combination is common where I am). To switch to metric measure, you have to change the unit in the model ( everything else is automatic). Window->Model Info-> Length Units. Set Format to Decimal and then the units to Millimeters, Centimeters or Meters. If you then run CutList again, all measures will show up in metric. How cool is that?

-- If you can't joint it, bead it!

View Bob O'Brien's profile

Bob O'Brien

11 posts in 2246 days


#10 posted 2245 days ago

I am running Google SketchUp Pro 6, and when I open the CutList plug-in I get the MS “This program cannot display the webpage.” Any help on this?

-- Bob

View titmas's profile

titmas

30 posts in 2539 days


#11 posted 2245 days ago

i extracted the entire contents of the zip file to my plugins folder but it is not available when i open SU6. is there another step im missing?

View Damian Penney's profile

Damian Penney

1140 posts in 2623 days


#12 posted 2245 days ago

Thanks for the followup Steve, sounds perfect :)

-- I am always doing that which I can not do, in order that I may learn how to do it. - Pablo Picasso

View Damian Penney's profile

Damian Penney

1140 posts in 2623 days


#13 posted 2245 days ago

Could you just rename firefox.exe to safari.exe (or whatever the mac version of this is)

-- I am always doing that which I can not do, in order that I may learn how to do it. - Pablo Picasso

View daltxguy's profile

daltxguy

1373 posts in 2546 days


#14 posted 2245 days ago

Bob,
This is usually an indication that it can’t find the html file used as the interface for the plugin. Make sure the folder ‘cutlistui’ from the zip file is also in your plugins folder.

titmas : Not sure what happened there, you might have unzipped it to a folder in the plugins folder. The ruby script has to be in the plugins folder along with the folder cutlistui which contains the rest of what the plugin needs.

Here is what your directory should look like after installation:

Hope this helps and you get to the fun stuff!

-- If you can't joint it, bead it!

View RhynoDesign's profile

RhynoDesign

11 posts in 2274 days


#15 posted 2245 days ago

Looks like a great program. Can’t wait to try it out!!!!!

showing 1 through 15 of 317 comments

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