If you are lucky enough to have your Glowforge already, you have probably already run across issues trying to laser objects that are thicker than 0.5"
Removing the crumb tray to fit the work-piece is the easy part.
The hard part is:
- Finding something that is the right thickness so that the top surface of your work-piece ends up between the top of where your crumb tray would have been and 0.5" from where the top of your original crumb tray would have been
- Calculating the correct focus height based on your original crumb tray height, the thickness of the riser you use and the thickness of the work-piece you are lasering
There are forum members out there that have written posts that make it somewhat straightforward to do all of this. I am going to attempt to make your life A WHOLE LOT EASIER.
I present to you a set of 3x different sized Risers, which are intended to be 3D printed.
These risers are the perfect heights to make your life EASY.
This is what they look like on my computer:
This is what they look like when you 3D print them:
The largest riser is the exact same height as my crumb tray. It is intended for materials between 0" - 0.5" thick, just like when you use the crumb tray itself. When you use the largest risers, the focus height is simply the thickness of the work-piece.
The medium riser is the exact same height as my crumb tray minus 0.5". It is intended for materials between 0.5" - 1.0" thick. When you use the medium risers, the focus height is simply the thickness of the work-piece minus 0.5".
The small riser is the exact same height as my crumb tray minus 1.0". It is intended for materials between 1.0" - 1.5" thick. When you use the medium risers, the focus height is simply the thickness of the work-piece minus 1.0".
A few notes:
- These risers are intended to be 3D printed. I made a set of 4x of each size for myself. You can 3D print them in any color you like and in any material. I printed them out of PLA. if you don’t have your own 3D printer or access to one, you can order 3D prints online via several different websites.
- Each riser is well marked. It shows the riser height, the work-piece size range and how much to subtract from your work-piece height to get to your focus height.
- I created the file for these risers using Fusion 360. If you don’t already use Fusion 360 for your 3D modeling, I HIGHLY recommend it.
- I am making my file available to you. You can download the file in any format that you wish, including native Fusion 360 format if you would like to edit the file yourself.
- I used a crumb tray height of 1.383", but you can adjust this value to whatever your crumb tray measures. Tip: this value is located in the file’s “Parameters Table”. If you do modify this value, don’t forget to modify the text as well.
- My file is set to millimeters. I am American and love America, but the metric system is clearly the best unit system.
Hope you enjoy these.