Measurements inaccurate after printing

I saw other threads about this that are now closed but no real obvious solution. I have made 2 simple pattern pieces with easy measurements. From what I have been able to determine, my printed pattern is 1/2 inch too short. The length is suppose to be 18 inches but the paper measurement of the tiled pages next to each other but no overlap it measures 17.5. The widths on the other hand seem to be 1/8 inch too long. This is with overlapping the pages to match the dotted lines together.

This probably doesn’t affect the outcome of your print, but can you tell us:

  1. printer make & model
  2. your operating system
  3. your Valentina version

Also can you upload your pattern file & measurement file We’ll need it to reproduce results.

Brother MFC-J45DW regular letter sizes paper using the tile feature. the first one was printed from the saved PDF and I believe the 2nd one was printed direct from Valentina. |(going by memory as I am not at the location with the printer at the moment.)

Windows 10 home edition 64 bit.

Valentina build revision: Hg 43c4c44d4c90

Ps thanks to those contributing to this application. The concept is absolutely brilliant.

Short skirt front.val (3.8 KB) Jennifer Maillet.vit (3.4 KB)

This is very hard to fix issue.

That’s bad. Because we should know exactly how did you print.

Also it is good to know your layout settings.

@ladysinaz, Can you export your total Layout image to a PDF, and upload it here?

This test_Square.val file was made with the weekly test build, v0.6.0 on Windows 10. It makes a square of 5x5cm, with 1cm between the lines of the grid. When I print this out on my Brother printer, it comes out precisely to 1cm between lines and 5cm square.

Print it out, making sure you’ve generated your Layout with Letter paper and your printer. Then measure between the lines. If your measurements are exactly 5cm and 1cm, then we know it’s not your printer setup.

test_Square.val (9.6 KB)

1 Like

The size is too small. If exists an error you will not see it on such small distance. For example if scale is 0.98 instead of 1.0.

Currently it is very important for how a user prints. Through Valentina or PDF reader. Also keep in mind printer margins.

These cases show that we must develop printer tests.

I can measure if it’s less than 1cm, but okay let’s take this to 15cm. There are 4 lines at 1cm, 2 lines at 10cm, and the square is 15cmx15cm test_Square.val (11.3 KB) cm.

I won’t be at the location where the printer is until the weekend but I can upload some samples.

I also don’t really understand the choosing paper for layout and how it has nothing to do with printing.

For my actual pattern for layout I can only choose A0 -A2 otherwise I get that “several workpieces left unarranged yet none of them match the paper”. But If I choose A0 for example it prints out extra blank pages with only dots down the side which is a waste. Short skirt front.pdf (31.9 KB)

I also get this message sometimes when saving a file I have already saved and am saving changes to. not sure if it is relevant.

The Layout image isn’t a ‘printing’ image - it’s just an image big enough to hold all the pieces. You are restricted to selecting from known paper sizes for the Layout image so that splitting it up into several smaller paper sheets for tiled printing is guaranteed to work. And if you happen to have a large-scale printer or plotter so that it doesn’t need to be split up, then you can select the corresponding paper size and print.

So for most people who print at home: First step - Generate Layout as one big image to hold all pieces. USUALLY YOU DON’T SELECT THE PAPER SIZE IN YOUR PRINTER, but will select whatever larger paper size will work. Second step - Print your one big image as a Tiled PDF to a printer. File/ Layout / Print as Tiled PDF.

That is what I ended up doing after reading some stuff on the forum. I would imagine you would have to manually edit the pdf in an editor to remove extra useless pages that show up in the tiled version?

I select roll paper 30" or 36" to create my big Layout image so that the least number of blank pages is generated in tiled printing.

Not a good idea to save Valentina patterns for edit and printing in other programs. You get into 90ppi vs 96ppi issues, and other issues which can change the pattern sizes, sometimes the Layout size changes only vertically or horizontally if the program scales the Layout image to fit certain pre-defined dimensions during file import.

Oh I wasn’t importing or exporting anything when I got that message if that is what you are referring to, just hitting save after adding another pattern piece. The message is confusing as neither of the versions number match the version I actually have…

(unrelated to this post but If someone wants to take note, or let me know if you want an actual separate post made… millimeter is misspelled at least in the layout settings.)

It’s not completely true that layout has nothing to do with printing, otherwise why would you need to choose paper sizes as that only comes into play at the printing stage. What I did just do though was just choose custom and put in the dimensions of the garment and go from there. My 9 page skirt is now 6 pages tiled as it should be :smiley: I tested it on another garment ballparking the max width of widest pieces and max height of the tallest piece. same thing. This one is down to 6 tiled pages vs the 12-16 I got on the other paper types. So that’s a win.

I will reprint with these new layout parameters when I get back to the printer and go from there.

Were you able to print out the skirt and measure to see what results you got?

oh I see your message now. No, the file format version update is not indicating a problem. It’s because we have expanded the file format to support the new features. As you noted, it’s not the Valentina program version but the *.val file format version.

You choosing a custom size for the initial Layout image works just as well as choosing roll paper to reduce blank pages in a tiled PDF. Most people wouldn’t want to go there, but you did. You are brave and curious, and this is good.

I haven’t downloaded and printed your pattern yet.

Yep there’s a problem. The draft formula is 18inches to hem. But the Layout, exported as an SVG file, shows 17.43inches. I opened the SVG in Inkscape, created a center line to measure, selected that line and applied the Visualize Path/Measure Path extension to it.

what I have been doing is measuring from the tip of the top edge down to the bottom. the 18 inches measurement is from the 2 top points without taking the downward curve into consideration.

That’s interesting file you have. Valentina can’t find correct format version for this file. See, it shows version v0.0.0. Can you send me an example (public or privately)?

Update. Found how to repeat. This is case about unsaved file.:slight_smile: Update. Patch has been released.

1 Like

I don’t see any problem here.

Here is my test file: A0test.val (2.2 KB)

This is rect 800x1100 mm. A0 format of paper sheet.

And here is result in Inkscape. I have been using version 0.92 and the latest Valentina in branch 0.6.0.

Result in pixels:

Little bit of math. 800 mm / 25.4 * 96 (dpi) = 3023,622047244 px. Inkscape result 3024.99 px.

1100 mm / 25.4 * 96 (dpi) = 4157,480314961 px. Inkscape result 4157.99 px.

As you can see difference is 2 pixels for width and less than pixel for height.

I believe you get wrong result because the tip of curve is not the best choice measure to.

Also i exported the file to pdf and opened in Inkscape. Here is result in this case:

This is actually good news because we use the same code for exporting in all cases. Scaling is correct. Looks more and more that you don’t left enough space for printer to print your layout. Or our printing settings are somewhere wrong.

1 Like

I don’t understand what you mean.? The reason i measure from the point is because my original top line was straight across and not curved. I made a point in the center of that line and made another line straight down that I manually typed in 18 inches for the length rather than using a stored measurement. I then added a second curved line connecting to the 2 points. So if i draw on my printout a straight line from tip to tip it should measure 18 inches from that line to the bottom line.

Digitally all of the measurements are correct. It is just the printout. It appears as though width wise the pages overlap a bit when taping them together but lengthwise not so much. is this correct? I tried matching up the pages with the dotted lines and that is where it was only a small bit off. If I didn’t overlap and just placed the sheets beside each other they ended up off the other way… Lengthwise even if I put the pages exactly with no overlap there was 1/2 an inch missing. What is the correct way to lay the down in order to tape them together? That way I have the best starting point to be able to tell what’s what.

What do you mean by this “Looks more and more that you don’t left enough space for printer to print your layout.”?