First off, I’d like to mention that this post is in no way an attack on Glowforge support as I have just informed them yesterday of what happened to me and am awaiting a response as I post this. This post is a warning for all Glowforge Basic users that may encounter the same issue I had.
Some of you may remember (@jbmanning5, @Jules, @CharlesDarwin) that I was having some cooling issues about a month or so ago. Please read this post if you are getting the “Alert Cooling” yellow light and you know your ambient room temperature is below 75 degrees.
Well, I have been in contact with the support team via email and have been slowly testing different cooling methods in order to make sure my glowforge is operating in the correct ambient temperature. The last “fix” was to remove my duct prior to any laser usage in case any of the outside air were to fill the Glowforge during down time, thus heating it up before use.
This weekend I finally purchased a window A/C unit specifically for my Glowforge room and turned it down to 65 degrees, I live in South Texas and know that it can get hot outside, so this was a final effort to keep the room at a steady 69 - 70 degrees before operating the laser. I wish I could say this resolved my issue, but alas, it did not. I was able to run one job (20 minute cut file on PG acrylic) and I received the Alert Cooling message again. I decided to shut down the machine, emailed Glowforge support, and waited for a couple hours to cool down. I had one more job I needed to run for the day (and thought it would be another good test with the window unit cranked up) so I fired up the Glowforge again for one more run last night. The job started just fine, and since it was another 20 minute cut file, I figured it wouldn’t have any issues mid-cut… then this happened:
This occurred within about 5 minutes of my cut job. After the initial shock, anger, then sadness, I realized how lucky I was that this damage was contained within the Glowforge. I was sitting about 5 feet away and can’t explain how scary it was to hear the pop, then see the glass shattered everywhere within the unit. I have emailed support my pictures and story and am currently awaiting a response, I will fill everyone in once I receive one.
PLEASE use this as a warning. All of the signs pointed to something wrong with my coolant pump within the unit, yet I was continually told to keep testing. I also noticed several coolant pump errors in my error log (that was sent to support). If anyone is getting the Alert Cooling issue regularly and the ambient temperature around the glowforge is below 75 degrees Fahrenheit, please refer them to this post to make sure you won’t end up with the same result.
Sorry for the lengthy post, hope to have this resolved quickly.