Edge Retention/Rolling Test Stand

[EOU]

"During quenching martensite is formed. Because martensite has lower density than the austenite it expands during the rapid cooling. Martensite is highly stressed and strained arrangement of iron and carbon atoms. Martensite is full of defects, mainly dislocations, which paradoxically cause its strength."

Thanks Jan. We know that you don't post information to the Exchange unless you have something in mind so how would you apply the above quoted statement specifically to what we are doing now? 

Here's a little update. We think that monday or tuesday everything will be ready to send off for heat-treat. In case you're curious, here's a couple of pictures of the test A2 in the mill. Front and side.

                                                              

The mill head is set at a 15° angle and the A2 piece is vertical. We made one pass per side and set the feed rate really, really slow. 15 minutes to cut one 6" long side.

Here's a couple of micro pics of what the bevel and edge looked like. The first is right off the mill and the second is after some deburring on leather.

                                                      

Ever wonder how sharp a deburred edge is after coming off a mill? We never wondered either but since we had the opportunity, we measured it.

                                                      

Now we're going to see how sharp we can get these uncooked babies using a Kally and Mr. Greppers super extra special angle guide and rest!