<p>I am using Cura 4.13.1 as a slicer for my Ender 3 v2 printer.</p>
<p>I want to print a model which I scaled to 400 %. To improve bed adhesion I wanted to add a default raft (Extra Margin = 15 mm). Unfortunately, Cura is not able to slice the model despite being still within the printer's build volume (400 % = 190x200x200 mm). I have to reduce the scaling to 365 %  (= 171x183x180 mmm) to fit the slicing.</p>
<p>As a workaround for printing the 400 % size, I will try to use a small support structure for better bed adhesion but I would prefer a raft.</p>
<p><strong>Edit:</strong> Sorry for leaving out the info about the models form. I get the 220+raft limitation but my model is tapered downwards:
<a href="https://i.stack.imgur.com/9PC5q.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9PC5q.png" alt="enter image description here" /></a></p>
<p>So the raft actually fits the printers/slicers default limit.
Does it really not matter and cura simply adds the raft size to models max X and Y values?</p>

[{'answer_id': 20133, 'author': 'Stanley', 'author_id': 35678, 'author_profile': 'https://3dprinting.stackexchange.com/users/35678', 'pm_score': 2, 'selected': False, 'text': '<p>The raft still needs to fit on the bed, and it counts as a print, because, it is printed. You want the raft for better adhesion, so that means that you need more contact with the bed. If you’re not, your basically wasting filament. Its kinda logical actually.</p>\n'}, {'answer_id': 20136, 'author': 'Trish', 'author_id': 8884, 'author_profile': 'https://3dprinting.stackexchange.com/users/8884', 'pm_score': 1, 'selected': False, 'text': '<h2>Adjusted model Dimensions</h2>\n<p>The model has the size determined by the base area of the bounding box, in this case, <span class="math-container">$\\pu{190 \\times 200\xa0mm }$</span>. The raft as told by OP adds 15mm on <strong>all</strong> sides of the model, and thus adds 30\xa0mm in total on both the X and Y dimensions. This gets us a bounding box floor area of <span class="math-container">$\\pu{220 \\times 230\xa0mm}$</span>.</p>\n<p>The model\'s bounding box has a height of <span class="math-container">$\\pu{200\xa0mm}$</span>. Add to that the thickness of the raft. This is not mentioned, but in the worst case, this is about 3\xa0mm, and so you get <span class="math-container">$\\pu{203\xa0mm}$</span> as the maximum. Our model\'s Bounding Box thus is <span class="math-container">$\\pu{220\\times 230\\times 203 mm}$</span></p>\n<p>The smaller scale model (<span class="math-container">$\\pu{171 \\times 183 \\times 180 mm}$</span>) results in an adjusted area of <span class="math-container">$\\pu{201 \\times 213 \\times 183 mm}$</span>.</p>\n<h2>Printer dimensions</h2>\n<p>The standard Creality Ender3 v2 is set up with a build volume of (<span class="math-container">$\\pu{220\\times 220\\times 250 mm}$</span>) As your base area is 230\xa0mm in one dimension, it just can\'t fit. The slightly scaled item is <em>just</em> under that dimension and thus fits.</p>\n<h2>Solutions</h2>\n<p>With a firmware update, the printer can be told to use all of the bed, and then Cura\'s printer settings can be adjusted accordingly.</p>\n<p>Sometimes, but not in this case, rotating the model can result in a model that doesn\'t fit in normal orientation to fit: A line of 240\xa0mm doesn\'t fit along the X or Y axis, but easily along the diagonal of the printer. In fact, it is enough to turn the model by about 23.3° and the line fits:</p>\n<p><a href="https://i.stack.imgur.com/rP9Ab.png" rel="nofollow noreferrer" title="Graphic showing a 240 mm line at a 23.3-degree angle fitting inside a gray box"><img src="https://i.stack.imgur.com/rP9Ab.png" alt="Graphic showing a 240 mm line of 0.45 mm width first at horizontal orientation and then at a 23.3-degree angle fitting inside a gray box of 220 mm width" title="Graphic showing a 240 mm line at a 23.3-degree angle fitting inside a gray box" /></a></p>\n'}]
['https://3dprinting.stackexchange.com/questions/20132', 'https://3dprinting.stackexchange.com', 'https://3dprinting.stackexchange.com/users/34370/']