Not really - I made a crap ton of it before I started using it, a few silver chest fulls. Still, I'm moving everything away from feeding charcoal to my reactor, and I'm guessing the recyclers will be kicking the scrap out pretty rapidly.
To be clear, I thought what was going on was that the EnderIO pipe was pulling the scrap fast enough and dumping it into the mass fab. Then, while tinkering with it, I noticed that the UU liquid wasn't being pumped out. That connected the dots, and I realized that the only time scrap went in and fluid came out was when the machine was turned off. ATM, I think I can do a short term fix by moving the chest away from the machine one block. I bet the scrap will flow in then.