(Corey, Niko)
This refers to FRS Ticket #9647.
We needed to make a modification to the HAM5 OFI Baffle (D0902845) by using a nibbler tool (desired modification is attached & labeled as "OFIREFLBAFFLE(MODS)". This tool was to be used to "nibble"-cut into 18 Guage (0.048" thick) stainless steel of a baffle part. I was working in HAM5 with Keita on another task so I recruited Niko to tackle this job. I helped him get set up and I tried one cut (each cut made about 3-4mm wide x 1-2mm long cut....needless to say it would be a slow process), and it was do-able, but hard.
Eventually Niko found it to get harder and harder as he went. We are thinking the tool was degrading. He made something on the order of 0.5 - 0.75" worth of total cutting progress (photo#1 attached). I wanted to give it a try & yes, it was really tough & could not make any progress....but on a final attempt I tried to manhandle it and manage one cut. However on the next cut, the cutting part failed/broke (photo #2 attached).
So perhaps another option can be tried? Keita said Gerardo used shears on a similar type of material...but would go through several shears to complete the job.
Ask Bubba about a "skinny wheel" abrasive cut. Follow up with a clean hand file.