In Mozaik's PAC Closet Library you can share a single panel between two sections of different depths (for example a 14" section beside a 16" section for bigger drawer glides) instead of doubling up panels. Phill Anton Consulting does not recommend it, but it works: the trick is to line up the front line bore on both sides so the shared panel does not become a flip operation. This is done by turning off variable toe and shifting the base and tall line-bore parameters.
Why is doubling up the recommended default?
Phill Anton Consulting recommends doubling up panels at a depth change — the left-hand approach in the video. With two separate panels you avoid flip operations and it is simpler to handle. The shared-panel approach on the right reuses one panel for both sections, which is "totally fine to do" but requires changing a couple of parameters inside the drawer section so the bores line up.
How do you know if a part will be a flip operation?
Open the part and look at its operations before sending it to the optimizer. If you flip the part over and see operations on both faces — for example a third line bore appearing on the back — that part is a flip operation. The goal is to get all operations onto one face. If every operation is on the back side, that is fine; they just cannot be split between the two faces.
What is the extra third line bore, and where does it come from?
With the shared panel, the two sections place their front line bore at different positions, leaving an unwanted "third line bore." Some users will also see an extra set of holes at the bottom because variable toe is turned on in the joint fasteners settings. Variable toe lets you place the toe wherever you want rather than in line with the line bore.
How do you turn off variable toe and reset the toe recess?
If you are going to share the panel, Phill recommends turning variable toe off (in the joint fasteners settings) and setting the toe recess back to approximately 58 mm. At that point the toe is purely visual. (PAC's separate modern toe-recess standard is a different topic.)
How do you move the line bore back to line it up?
Go into the section, open the Parameters tab, select product parameters, and select both the base and the tall values (hold Ctrl to pick both). They are 68 by default. Add 50 to each, bringing them to 118. Phill derived the 50 by dimensioning from one center to the other center on the panel, which measured 50. After the change, re-check the panel: with the bores lined up you should see no operations split across the back, so the part is no longer a flip operation.
Can you make the deeper section the default?
Yes. If you regularly run deeper drawer sections, go into your drawer sections, override the parameters to 118, and save back to library. That makes the deeper, lined-up configuration your default, which Phill says is "totally fine to do."
Get it done-for-you
You can set this up by hand (above). If you build these regularly, the PAC Mozaik Closet Library from PAC has it ready in Mozaik. → phillanton.com
Full disclosure: Phill Anton Consulting makes this product.
FAQ
Why does a depth change create a flip operation in Mozaik?
When two adjacent sections have different depths and share one panel, the line bore on each side lands at a different position. Because the bore pattern differs front-to-back across the shared panel, the part becomes a flip operation. Lining up the front line bore on both sides removes the extra bore and clears the flip.
Should you share a panel across a depth change in the PAC Closet Library?
Phill Anton Consulting does not recommend it. The PAC default is to double up panels at a depth change (the left-hand approach) so you avoid flip operations. Sharing one panel works and is "totally fine," but it takes extra parameter changes to line everything up.