All Springer/NP/PCP Air Gun Discussion General > Show Off Your Air Guns With Mods (SHOW and TELL)
45 caliber Big Bird Big Bore Build
MJP:
Be sure to vent the tube in front of the hammer or you will loose alot of hammer energy for moving air in front of the hammer.
Marko
BigBird:
--- Quote from: JuryRigger on December 29, 2021, 11:09:37 AM ---The old handbooks all extol the virtues of HSS as being that it will retain most of it's hardness even after being heated to a red heat for a short time... A lot more extreme than just drawing it to a blue color; I've sharpened up badly abused drills that had the ends melted-only ground them far enough back to get good flutes; and they cut just fine (and no; I didn't melt them :D)...
Only thing to watch when cutting drills down, is that (on most of the ones I've dealt with, anyhow) the web gets thicker further up the drill; which will make for a useless bit at a certain point (IME this only really shows when you're down to the last 1" or so of flutes)...
Jesse
--- End quote ---
Interesting. I am still learning heat treating. I've learned that my toaster oven heats stuff up too quickly. Things that should be straw quickly went to blue or grey before I could pull it out. I am going to try to heat treat the hammer at some point using casenite. Any advice on that would be great. I only have a map gas torch.
BigBird:
--- Quote from: MJP on December 29, 2021, 04:29:11 PM ---Be sure to vent the tube in front of the hammer or you will loose alot of hammer energy for moving air in front of the hammer.
Marko
--- End quote ---
Yes. I was thinking either that or making a groove on the hammer that will let air by and for the front trigger screw.
JuryRigger:
--- Quote from: BigBird on December 29, 2021, 04:39:31 PM ---
Interesting. I am still learning heat treating. I've learned that my toaster oven heats stuff up too quickly. Things that should be straw quickly went to blue or grey before I could pull it out. I am going to try to heat treat the hammer at some point using casenite. Any advice on that would be great. I only have a map gas torch.
--- End quote ---
No experience there; afraid that I can't help...
Jesse
Rob M:
is that 10.7 ounce hammer ?? sweet
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