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1/2 or 3/4 hp is plenty. a C face motor isn't required, but does make attaching a tool rest easier. if you already have a VFD, shop well and put one together for $100 or so.

i picked up an 8" disc pad and mounted on spare 3 phase motor. works ok. 8" is size chosen by lapidary and metallurgy lab, lots of psa discs available. you can find an 8" disc pad for about $50. if you like it, then add tool rest. keep it simple, use it, if you like it, add to it.

for first time, go with 1/16" O1 or 8670, grind about 3 degrees per side till edge is 0.03(1/32"), HT, temper to Rc62 or so, grind 6 or 7 degrees per side and sharpen.

the issue is the word "Should", which implies anything else is wrong. most steels have a hardness range that is also high toughness. also look at where the knife came from. harder steel is harder to grind, so most commercial knives have lower hardness numbers so they are cheaper to make. in...

for my kitchen knives I like the finished handle to be about 1" tall and 3/4" to 7/8" thick. so 3/8" or 1/2" scale to start. as said, easy to take off, impossible to add more

very nice. how thin is it? try the same shape with 1/16" O1 or 1.2519 at Rc 64-65.

i have bought here. good service. http://www.jephcosupply.com/

just read the Crucible data sheet. http://www.crucible.com/PDFs/DataSheets2010/Data%20Sheet%204V.pdf warm oil till black, then air cool or use quench plates. on the same page are hardening recommendations for max hardness or max toughness.

a used lab furnace example https://www.ebay.com/itm/General-Sigma-Lindberg-Bench-Top-Laboratory-Oven-Box-Furnace-51894/122959835332?hash=item1ca0fa30c4:g:P0sAAOSwYNxafhv4 chamber is 9x9x14", heats to 2050F, if you find one close, you can save on shipping. just a thought. this is another way...

look for other sources. go to sites and look for used lab furnaces. these are furnaces designed to heat quickly and evenly in addition to lasting for years. they are not pottery kilns with a different name. at the same time, look for a used front door pottery kiln. a big decision is how...

here is a good source of how to and supplies http://www.joppaglass.com/elements/mainelpg.html and $55 for the element is reasonable. these folks are a good source for elements and related hardware http://www.duralite.com/store/scripts/prodlist.asp these folks for thermocouples and related...

first thing I would do is check accuracy and location of the kiln thermocouples. how far away is the thermocouple from where the knife will sit. is it possible to place a second thermocouple next to where the blade will sit? see how much it differs from the kiln thermocouple. second would...

Ed, what temperature are you using? all my work has been at 800C/1475F, soak of 5 minutes for 3/32" stock.

certain oils, canola and some commercial quench oil, work better when heated to 115F to 130F. some oils form a vapor layer,some don't, canola does not. you move the knife in the oil to keep it in cooler oil and you always go up and down or you cut; Never side to side(supposed to warp the...

for do-it-yourself, you can't beat O1. for a basic blade 1/16" at spine, put in a furnace pre-heated to 1475F, once furnace says 1475F again, soak for 7-8 minutes, quench in 120F canola. wash in cold water. two one hour tempers at 325F should be Rc63-64. besides being less than half the...

as mentioned, AEB-L/13C26 recommend a sub-zero(-95F) treatment immediately after quench to room temperature. the idea is continuous cooling, the sub-zero must be done within 30 minutes of reaching room...

at the office we used plain NEMA 1 VFDs and never had issues even with mass quantities of metal and graphite dust in the air. Locating your VFD is important also, mine is above and behind the grinder table, so it is away from grinder dust. as far as brand to use, I never heard of KB until I...

after you get calipers, shop for a small piece of O1 precision ground flat stock. thickness and width are usually very tight tolerance, so use a piece to calibrate with. with Starrett brand, the thickness is +/- 0.001 and the width is +.000/.005", so they would make good calibration blocks.

try these folks http://www.duralite.com/store/scripts/prodView.asp?idproduct=108 or http://www.joppaglass.com/elements/mainelpg.html they the elements and all the other stuff to mount them

grind to 220/240 before HT. leave edge 0.5mm/0.03". if you have quench plates, quench to black in oil then between quench plates to room temperature. temper 350-375 which you put you in the Rc62-63 range.