Rice 2020 WIP

Greg Rice said:
So re-did my jig a bit so I could use my file guide (just cut a slot in an old tv stand door) drilled some holes and attached that piece of brass ol' HillBilly sent me - ( Thanks Bruce!) so's I could try and keep my file clean.

Observation: This steel that I ordered up - it doesn't create near as much chunks of scat as those old files do - maybe because they had been hardened 50 years ago - and then annealed by an amateur like me?

Finally - after all this time - I am starting to file the bevel in ol' hillbilly's knife - and starting to covet some of all ya'alls' (all ya'all's is plural-possessive for ya'all) grinder skills...

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Did some preliminary shaping on the Texas Ebony handles before beginning the bevels - still have work to do.

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That's coming right along. Good work!
 
Greg Rice said:
Thanks Bruce! I am trying hard

How are you and the Mrs? They lifted your mandatory evac order - right? (like you would leave anyway...)

Stay safe my friend!
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We're ok...really smokey. AQI is hovering around 400 . Actually deadly if you're not careful. Yes , the "mandatory" evac has been lifted .... but that order has no backbone -they cannot force you to leave. So, of course, we stayed.
Thanks for askin, we appreciate it.
 
Bruce McLeish said:
We're ok...really smokey. AQI is hovering around 400 . Actually deadly if you're not careful. Yes , the "mandatory" evac has been lifted .... but that order has no backbone -they cannot force you to leave. So, of course, we stayed.
Thanks for askin, we appreciate it.
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I've been wondering how you were faring with the fires. Glad to hear things are OK.
 
Ok - need an IQ bump here using this bevel calculator:


I put in my 1/8 inch thickness and that I wanted a .75" bevel - put me at 4.8* which I could tell was too steep - since my steel is NOT 1/8" or .125" but only .120 - I lowered the angle eventually to 3.7* - but it is still too steep - I am approaching my edge scribe and not yet quite .45" in bevel height. I probably need to go down to 3* - but would like to know either the formula or how to correctly use the calculator... :confused:

Now, to be fair, I did do a double scribe on the edge to leave myself a little meat for HT - but not that much. What am I doing wrong here? What am I missing?
 
Greg Rice said:
Ok - need an IQ bump here using this bevel calculator:


I put in my 1/8 inch thickness and that I wanted a .75" bevel - put me at 4.8* which I could tell was too steep - since my steel is NOT 1/8" or .125" but only .120 - I lowered the angle eventually to 3.7* - but it is still too steep - I am approaching my edge scribe and not yet quite .45" in bevel height. I probably need to go down to 3* - but would like to know either the formula or how to correctly use the calculator... :confused:

Now, to be fair, I did do a double scribe on the edge to leave myself a little meat for HT - but not that much. What am I doing wrong here? What am I missing?
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The actual formula (if you're using dc knives) is in the small print bottom center of screen.
 
ok - so that bevel formula (and the subsequent calculator) requires something that I am missing or not understanding - 4.7* is flat incorrect for what I need (probably due to ignorance)

Anyway - I found this site below where it is actually looking at the metal I remove and taking into account the width left after grinding/filing - then dividing the depth of bevel cut by the height of bevel - will give you a number that you can run through the Arc Tangent - it gave me a degree of 2.9* to get what I wanted. Of course - you guys probably all knew that - I still don't know what I did wrong on the DC Knives calculator - It is definitely an
'ID Ten T' error for sure

Here is a link to deign tech with their method that I was able to comprehend (it had pictures!)
Design Tech Blade Angle

Here is a link to Rapid Tables Tangent and Arc Tangent Calculators (you will use it to plug in results from Design Tech)
Tan & Arc Tan

I put these here so I could find them again some day....
 
Greg Rice said:
ok - so that bevel formula (and the subsequent calculator) requires something that I am missing or not understanding - 4.7* is flat incorrect for what I need (probably due to ignorance)

Anyway - I found this site below where it is actually looking at the metal I remove and taking into account the width left after grinding/filing - then dividing the depth of bevel cut by the height of bevel - will give you a number that you can run through the Arc Tangent - it gave me a degree of 2.9* to get what I wanted. Of course - you guys probably all knew that - I still don't know what I did wrong on the DC Knives calculator - It is definitely an
'ID Ten T' error for sure

Here is a link to deign tech with their method that I was able to comprehend (it had pictures!)
Design Tech Blade Angle

Here is a link to Rapid Tables Tangent and Arc Tangent Calculators (you will use it to plug in results from Design Tech)
Tan & Arc Tan

I put these here so I could find them again some day....
Click to expand...
as long as you get there, it don't matter what road ya took. Glad ya figgered it out, Lucille.
 
Hey Greg, I feel your distress. I, too, like things just so.
I have to ask, how are you measuring and setting your angles? How much between your two center lines?
I have and still use D. Comeau's calculator and it works for me. (gets me real close.) I fuss with a digital angle cube til I get it on the money and go with it.
When I am real close I finish grinding by hand (2x72 grinder), no jigs, and then walk the grind line up to where I want it. Then I spend the time hand sanding it clean.
At first I used a filing jig and did fairly well, but, still had to massage everything custom.

Scott
 
Thanks Scott - let me see

First, I know that it is me because no one else seems to have issues.... and yes, I have issues)(

So when I used DC's calculator, It doesn't seem to allow for very much input (or I am using the wrong one) - I could only choose my width from a drop down and closest to .120 was 1/8" And I chose the 3/4 bevel height giving 4.7*. It just assumes a 'zero' space between the two lines I guess. I couldn't figure out how to tweak it (back to that ID 10 T error)

Now - to answer - the best I can see the space between the two lines is about .05xxxx on my calipers - so about 1/16th of an inch...
So - stock is .120 @ spine and will be .0625 when I stop - halving each of those I get a triangle of material removed of .75 height and .02875 at it's base (depth of cut) - dividing the depth by the height yields .03833
Plugging that into the arc tan = 2.2* and I went with my gut of 3*figuring like you I could finish it off manual - it's just a lot of difference between 2.2* and 4.8*

UPDATE: As I sit here and type this - It occurred to me - when you guys use DC's bevel calculator - do you halve your stock thickness before plugging it in? If I did THAT using my swag of 1/8 inch thick halved gives me 1/16 stock thickness and .75 bevel height - Then DC's gives me 2.4*!!!!

Is that the mystery piece I have been missing!!!???
 
Hey gang! Took a couple of weeks off and went to our place in Colorado - much needed break! Now - back to the grind...

So I have started my draw filing and then went to hand sanding. Learning one thing for sure - ol' Bruce knows what he is talking about - use the brass and keep the files clean! I THINK I am about ready to heat treat this wench of a knife - any thoughts?

Dunno why everyone puts wood and stuff inside the pipe? I attached a small vise head I got in a box of tools from an auction - I can twist and turn in every direction.
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Sanding Sticks? Thanks Ed!!
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If you don't zoom in - it looks great. Kinda like me - I'm not fat, your too close - at 100 yards I look to weigh a buck 80 - just sayin...
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