MASTERCAM SCALING ON HIGH DPI (4K) DISPLAYS

Purpose: To Instruct Mastercam to tell Windows that it is not DPI aware and let it scale everything properly. (This may not be the ideal solu on, but it makes Mastercam usable on high resolu on displays, such as the 3000 X 2000 resolu on Microso  Surface Book.) This informa on was adapted from Dan Antonielli’s solu on for scaling Adobe and other applica ons.  Link to his site is: h p://www.danantonielli.com/adobe‐app‐scaling‐on‐high‐dpi‐displays‐fix/ 

HOW TO FIX IT STEP BY STEP: 

1. Tell Windows to Look for an External Manifest File by edi ng the Registry

• Press Windows Bu on + R, and then type “regedit” and click OK.

• Navigate to the following registry subkey: HKEY_LOCAL_MACHINE>SOFTWARE>Microso >Windows> CurrentVersion>SideBySide

• Right‐click, select NEW>DWORD (32 bit) Value

• Type PreferExternalManifest, and then press Enter

• Right‐click PreferExternalManifest, and then click Modify

• Enter Value data 1 and select Decimal

• Click OK, then Exit Registry Editor.

MASTERCAM BEFORE:

The Toolpath and other Managers display  ny icons and text making them nearly impossible to select.  Also other areas of Mastercam display, such as Stock Setup has text and images out of place or incorrectly sized. 

© QTE Manufacturing Solu ons

MASTERCAM AFTER:

The Toolpath and other Managers icons and text are now selectable and legible and the other graphics problem areas are back to normal. 

BEFORE

AFTER

© QTE Manufacturing Solu ons

2. Create the External Manifest file. The External Manifest file is simply a text file that you can create and save with any text editor, such as Notepad.  

• Open Notepad or other text editor.

• Navigate to the following website: h p://www.danantonielli.com/wp‐content/uploads/2014/03/manifest.txt

• Copy all of the text from Dan Antonielli’s site and paste into Notepad.

• Save the text file as the name: “mastercam.exe.manifest”

3. COPY your text file to your Mastercam Program Directory (Typically located at C:\Program Files\mcam2017)

4. That’s it! No need to reboot. Start Mastercam as normal and you can put away your magnifying glass!

Copy and Paste all of this Text to Notepad