Parametric Vinyl Squeegee / Rakel with Knife Guides

A customisable squeegee for applying vinyl and window film to flat glass surfaces. The design features tapered working edges, rounded corners, central ridges and an optional raised handle.

The narrow slits near the corners act as knife guides. Insert your knife blade into a selected slit, then slide the squeegee while cutting. The slit supports and guides the blade to help maintain a straight cut. Slit dimensions, spacing, number and position can be adjusted to suit your setup.

EDIT: 

Due to issues with fusion files (when changing number of knife guides, users need to manualy reconfirm the extrudes), I decided to rebuild the whole thing in openSCAD, giving proper parametric control over details. 
New files are uploaded, but I'm still leaving the old fusion files here, just in case anyone wants to play with them. Note: Grip shape is a bit different (offset) in openSCAD version - that is intentional :) 

The editable Autodesk Fusion files are included so you can customise the tool before printing.

Included Fusion files

• .f3d — standard parametric design: a single saved model variant with editable dimensions and design history.

• .f3z — configured design: includes the configuration table and both supplied handle options. Use this version to switch between them.
  

Customising the model

1. Upload the chosen file to Autodesk Fusion and open it.

2. If using the configured .f3z version, select your desired configuration in the Browser.

3. Open Design → Solid → Modify → Change Parameters.

4. Use the star/Favorites filter to display the main controls.

5. Change the values in the Expression column, confirm the changes, then export your customised model as a mesh for your slicer.

The main controls are already marked as Favorites. They include both named sketch/feature dimensions and User Parameters, so use the Favorites list to find the complete set.

Adjust knife_width to suit your blade and the clearance your printer produces.

In the configured design, parameter changes apply to the active configuration, so select the handle option you want before editing its dimensions.

Fusion Personal Use users can switch between existing configurations in the Browser and edit the active configuration’s parameters. Creating additional configurations and accessing the Configuration Table require an entitlement that includes those features. The standard Change Parameters dialog remains available for customisation.

THIS IS STILL A WORK IN PROGRESS SO SOME ISSUES ARE TO BE EXPECTED. REGARDLESS - GOOD LUCK AND HAVE FUN WITH IT !