When printed at 100% on all axis, the clearance on the slot is 18.26mm, so that is the maximum thickness of the laptop (again, at 100%). If another dimension is needed, bigger or smaller, the model can be scaled on one axis.

I use it for a MacBook Pro 16'' 2019 that is 16.2mm and added two 1mm adhesive foam sheets, one for each side, that added to approximately 18.2mm so it has an almost tight fit.

Scaling

Method 1 (New, requires PrusaSlicer >2.6.0)

Since the release of PrusaSlicer 2.6.0 alpha 2, a new tool is available, the Measurement tool, that allows us to scale the model very easily.

With the model imported on the slicer, select it and select the icon for “measure” on the left.

Select both the left and right inside faces of the model

A good dimension for the laptop gap is (laptop thickness + tolerance x 2). Around 0.15mm tolerance should be good. With the math done, input the value and click “scale”.

Method 2 (Old)

Scaling can be a bit challenging using the Slicer since we only get the outer dimensions of the object, however, we can use Math to solve this issue first.

Since we know the inner dimension at 100% is 18.26mm, we only need the thickness we desire.

Let's say we want to resize the piece to use on a laptop with 15mm and a press-fit (no space left), using the "rule of three":

Or we can use an online Rule of Three Calculator:

The outcome in this scenario is 82.15, but wait!

⚠Don't forget to account for printer tolerances, quoting Mikolas Zuza in The Surprising Practical Uses of Color Change in PrusaSlicer, “0.15 millimetres in every direction should be enough.”

So to the 15mm, we would add 2 times 0.15mm, giving the final dimension of 15.3, let's update the rule:

The adjusted outcome in this scenario is 83.79, so we would change the scale on one axis to the value of 83.79%:

Et voilà, we have the object sized according to our needs.

Scaling TL;DR

Find the dimension of your laptop (MacBook size list below).

See if you want a tight fit or have some gap space between the laptop and the object.

⚠Account for printer tolerances (usually 0.15mm is a good start, double it to account for both sides).

Add it all and use the rule of three with the values we already know from the object, 100% represents 18.26mm, and X% should mean (laptop height + gap + tolerances)mm.

Adjust the scale in the slicer on only one axis.

MacBook height sizes

2021

MacBook Pro (14-inch, 2021) - 15.5mm

MacBook Pro (16-inch, 2021) - 16.8mm

2020

MacBook Air (M1/Retina, 13-inch, 2020) - 16.1mm

MacBook Pro (Intel, 13-inch, 2/4 Thunderbolt ports, 2020) - 15.6mm

MacBook Pro (M1, 13-inch, 2020) - 15.6mm

2019

MacBook Air (Retina, 13-inch, 2019) - 15.6mm

MacBook Pro (13-inch, 2/4 Thunderbolt ports, 2019) - 14.9mm

MacBook Pro (15-inch, 2019) - 15.5mm

MacBook Pro (16-inch, 2019) - 16.2mm

2018

MacBook Air (Retina, 13-inch, 2018) - 15.6mm

MacBook Pro (13-inch, 2018) - 14.9mm

MacBook Pro (15-inch, 2018) - 15.5mm

2017

MacBook (Retina, 12-inch, 2017) - 13.1mm

MacBook Air (13-inch, 2017) - 17mm

MacBook Pro (13-inch, 2/4 Thunderbolt ports, 2017) - 14.9mm

MacBook Pro (15-inch, 2017) - 15.5mm

2016

MacBook (Retina, 12-inch, Early 2016) - 13.1mm

MacBook Pro (13-inch, 2/4 Thunderbolt ports, 2016) - 14.9mm

MacBook Pro (15-inch, 2016) - 15.5mm

2015

MacBook (Retina, 12-inch, Early 2015) - 13.1mm

MacBook Air (11/13-inch, Early 2015) - 17mm

MacBook Pro (Retina, 13/15, Early/Mid 2015) - 18mm

2014

MacBook Air (11/13-inch, Early 2014) - 17mm

MacBook Pro (Retina, 13/15-inch, Mid 2014) - 18mm

2013

MacBook Air (11/13-inch, Mid 2013) - 17mm

MacBook Pro (Retina, 13-inch, Early 2013) - 19mm

MacBook Pro (Retina, 15-inch, Early 2013) - 18mm

MacBook Pro (Retina, 13/15-inch, Late 2013) - 18mm

2012

MacBook Air (11/13-inch, Mid 2012) - 17mm

MacBook Pro (13/15-inch, Mid 2012) - 24.1mm

MacBook Pro (Retina, 13-inch, Late 2012) - 19mm

MacBook Pro (Retina, 15-inch, Mid 2012) - 18mm

2011

MacBook Air (11/13-inch, Mid 2011) - 17mm

MacBook Pro (13/15-inch, Early/Late 2011) - 24.1mm

MacBook Pro (17-inch, Early/Late 2011) - 25mm

2010

MacBook (13-inch, Mid 2010) - 27.4mm

MacBook Air (11/13-inch, Late 2010) - 17mm

MacBook Pro (13/15-inch, Mid 2010) - 24.1mm

MacBook Pro (17-inch, Mid 2010) - 25mm

2009

MacBook (13-inch, Early/Mid 2009) - 27.5mm

MacBook (13-inch, Late 2009) - 27.4mm

MacBook Air (13-inch, Mid 2009) - 19.4mm

MacBook Pro (13/15-inch, Mid 2009) - 24.1mm

MacBook Pro (17-inch, Early 2009) - 24.1mm

MacBook Pro (17-inch, Mid 2009) - 25mm

2008

MacBook Pro (15-inch, Late 2008) - 24.1mm

MacBook Pro (15/17-inch, Early 2008) - 25.9mm

Source: support.apple.com

Credits

Clamshell Macbook stand by giahuy2201

Model origin

The author remixed this model.

Clamshell Macbook stand

by giahuy2201 (thingiverse.com)

MacBook vertical stand

Description

Printing