What erin said. It looks like a bit of glue. I use a paint brush, add water, and spread the glue around very thin. Then heat up the bed and it should dry within 5 minutes almost invisible.
Edited by Guest- 2 weeks later...
Thanks for your replies guys & girls 
I dont use glue and I dont have a glass bed, but yes, it is the side thats facing the bed.
There are no obvious holes or gauges in my bed surface so im not sure what is going on.
A little bit of the first layer probably got detached and caused that defect. Sometimes it can detach slightly, curl up a little bit because it gets hit by the head and then it gets smooshed down again as the next few layers are laid down.
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fbrc8-erin 298
Hi, Katie,
Is that the side of the print that was against your glass?
Did you use glue on it?
If it's the side that was against your glass and you didn't use glue, the glass made need cleaning.
If you used glue, you may want to make sure to dilute it with water enough that the layer on the glass is totally flat.
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