Machsupport Forum

General CNC Chat => Show"N"Tell ( What you have made with your CNC machine.) => Topic started by: RICH on July 16, 2013, 09:03:43 PM

Title: KNIFE SHARPENER
Post by: RICH on July 16, 2013, 09:03:43 PM
Here is the knife sharpener I just finished. Works fantastic. I realy wanted something that is rigid,
could do just about any knife or whatever, totaly adjustable, had good feel when stoning, was easy
 to use and set, can be set and reset accurately,and had a good  hold down system. Also didn't want to spend much money. Only cost was the $15 for the digital caliper ( modified to a sliding scale) and two diamond stones.

Pic 1S is the sharpener. Everthing is machined perpendicular or parrallel as required for accurate adjustment.

Pic 2S shows the rotating bearing, sliding / rotating rod , stroke stops, and digital setting scale.

Pic 3S shows the adjustable holder for different length stones or laps and one of the holdowns that are used.

Pic 4S shows a 40x magnification of the beveled edge put on my Pro S Heinkle 10" carving knife. Yes, you can shave with it!

This was just one of those projects that I enjoyed doing since it was a usable household item.
Nothing beats a simple tool that does it's job extremely well.

RICH
Title: Re: KNIFE SHARPENER
Post by: Chaoticone on July 16, 2013, 09:39:42 PM
Good job Wizard Rich! What kind of turn around do you have for sharpening? I'll go box up all my dull blades now.  ;D

I too love a simple effective tool. I think its a bit of a art to able to put a really nice edge on a blade.  Like drawing...... not a skill I ever mastered.  Thank goodness for wizards and/or the tools made by them.

Brett
Title: Re: KNIFE SHARPENER
Post by: RICH on July 16, 2013, 10:40:30 PM
Brett,
Turn around time is terrible!
Not to much practice so far. Need to splurge and buy a medium and course diamond stone.
All of our knifes needed to start the edge from scratch. Bought two nice Hinkle knifes at the flea market
for $6 (beats $100 or so new). I think the wife uses them for screw drivers and pry bars.

If i only need to touch up an edge, then maybe 10 minutes, but from scratch 30 to 40 minutes.
I could never put a good edge on my Sakia made for Gerber folding hunting knife. Spent an hour on it doing a double
edge with the final edge lapped using 4000 grit paper and then that paper charged with polishing compound.
Talk about one sharp knife .........but..........never was able to do maintain a constant / repeatable rake angle
before and polish out the cutting edge.

BTW, You'll need to get in line as everyone wants their knifes sharpened now. I have no intent on making this
into work. Sharpening a knife should be like drinking a fine Scotch nea. Just slowly, with pleasure.......brain dead
therapy.

RICH

Title: Re: KNIFE SHARPENER
Post by: Chaoticone on July 16, 2013, 10:45:34 PM
 ;D  Every thing is slow for me now.....

Brett
Title: Re: KNIFE SHARPENER
Post by: budman68 on July 17, 2013, 05:17:32 AM
Nifty, Rich!

 Nothing better than making more work for yourself. I'm a bit like you, I'm afraid, as I'm always trying to make life/work easier which eventually just makes it able to get more work done, which in turn, makes you think of ideas to make things easier which will get more work done...yadda yadda yadda......it's a vicious cycle  :D

Dave
Title: Re: KNIFE SHARPENER
Post by: RICH on August 21, 2013, 10:04:15 PM
Bought a broken Henckle Pro deboning knife for 50 cents at the flea market.
Reshaped and straightened the knife into a 3" paring knife, made new handles from some nice
Cocobolo wood I had laying around for years. Hand polished the blade and handles and here is the end result.

Been a long time since I made a knife and forgot the effort required.
2 degree blade bevel with a 13 degree relief and additional relief for the cutting edge at 17 degrees.
Yes you can shave with it or cut toilet paper..............I prefer making tomato roses!  :D

RICH
Title: Re: KNIFE SHARPENER
Post by: Ya-Nvr-No on August 22, 2013, 07:28:08 AM
Rich that is very Purrrrdy. Now should/will you let your wife use it? Always amazed of all the dull knives in a women's Kitchen (http://en.wikipedia.org/wiki/Vance_Miller).

Toilet paper, bathrooms and knives, don't sound like Id be interested in seeing the tests.
Or Is this for Man-Scapeing?  ::)
Title: Re: KNIFE SHARPENER
Post by: RICH on August 22, 2013, 05:32:05 PM
Quote
Now should/will you let your wife use it?


No........since I will probably give it to someone as a gift along with maybe a matching 8" chef's.
The wife has plenty of choices in the knife rack and they are all razor sharp.

BTW, you hold a piece of toilet paper and see if the weight of the knife when drawn back will slice it cleanly.

RICH
Title: Re: KNIFE SHARPENER
Post by: RICH on September 10, 2013, 08:12:36 AM
Grandpop was a blacksmith in his young years. Shown is one of his anvils (has that nice ring when stuck) that I was lucky to get
and the knife on it was made by him from a file.
I had the knife laying around for years and remember using it as a kid to chop shrubs or whatever down.
One of those junk box items you just don't want to get rid of.
The knife is carbon steel, the original cherry wood handles were attached with brass rods, the tip was broken, the blade rusted / pitted badly.

So I cleaned it up ( labor of love .....real PITA) and replaced the handles with Bubinga wood I had for years.
Sharpens to a razor edge, 12 1/2" blade.

Like Crocodile Dundy said to the attacker....."now this is a knife" !

RICH
 
Title: Re: KNIFE SHARPENER
Post by: Chaoticone on September 10, 2013, 08:22:00 AM
Good Job Rich, it looks great! A very cool Knife and an even cooler story.  :)

Brett
Title: Re: KNIFE SHARPENER
Post by: Ya-Nvr-No on September 10, 2013, 08:38:03 AM
Making GrandPa proud, nice job, that PITA was well worth it.
Title: Re: KNIFE SHARPENER
Post by: Picengraver on September 10, 2013, 03:56:47 PM
Rich,
It's plain to see that Grandpop's craftsmanship skills passed down nicely.  That knife will become a treasured family heirloom I hope.

Thanks for sharing.
John Champlain
Title: Re: KNIFE SHARPENER
Post by: RICH on October 14, 2013, 08:41:10 AM
After purchasing ( finding would be a better word ) and reconditioning some 40 knifes for the relations I figured it was about time to start
my owne custom set of knifes.

Here's a pic of the 8" chefs knife. The set will all have mirror polished blades. It's all hand work to a 2000 grit finish and then the final buffing is done.
All handles will have brass Loveless bolts which were manualy made to date. Need to put the cnc lathe to use since I'll probably need 30 or more.
Presentation grade ( highly figured or burled ) matching Cocobolo will be used for the handles. No need for conditioning the wood, it machines nicely,
but, I found that I am somewhat sensitive to the wood when it's being machined and frankly never had to wear a mask when doing machine work.
I have tried a lot of finishes for the handles over time but these will be done with a clear glue as it realy stands up to abuse. Only problem is that's
it's a nasty application but the results are worth it. The knife has a 20 deg relief which is polished to 3000 grit and then stropped to razor sharpness.

Another paring knife was started using a Damascus  VG10 blade HRC 60-62 since i just wanted to have one knife with a 15 deg relief on it
and also see how it would hold up under use.

Pic of the chefs knife attached.

RICH
Title: Re: KNIFE SHARPENER
Post by: Ya-Nvr-No on October 14, 2013, 09:01:56 AM
Nice looking knife, Beautiful workmanship Rich.
Title: Re: KNIFE SHARPENER
Post by: RICH on October 28, 2013, 09:22:42 AM
Continuing on with the set here is a decorating kinfe and a paring knife with Damascus blade.

RICH
Title: Re: KNIFE SHARPENER
Post by: Picengraver on October 28, 2013, 01:48:26 PM
Rich,
Pretty sharp.  (Sorry, I couldn't resist the pun.  ;D )

But very nice workmanship indeed.
John Champlain
Title: Re: KNIFE SHARPENER
Post by: RICH on July 10, 2014, 09:45:42 AM
Just some pic's of a knife set I am doing.
Got in the mood to do another after making a bunch of Colby Bolts on the lathe.
CNC lathe for multiple items surely saves time.

So finished the de-boning knife and got some basic work done for a trimming knife.
The nice thing about doing some custom knifes is that you can make something to suite yourself.
In the case of the trimmer it will feel just like one of my favorate pocket knifes when in use.

RICH
Title: Re: KNIFE SHARPENER
Post by: adprinter on July 12, 2014, 11:20:15 PM
Nice looking knives you've got going there! (And some beautiful wood to work with).
Title: Re: KNIFE SHARPENER
Post by: RICH on August 28, 2014, 10:54:32 AM
Just some pic's of a my belt grinder after restoring an old UBG-622 Hammond belt grinder.
Will use it for sharpening, scale removal, and deburring

SPECS:
- Belt Size adjustable:  1" to 2" wide x 42" to 60" long ( may add another idler to allow use of 72" belts)
- Dust collector system
- 3 Belt speeds: 1465, 2835, 5652 SFPM
- Motor: 1 1/2 HP  (reversable via switch  to allow belt travel in both directions)
- Contact wheel: 6" x 2"  ( a few others are being made 8"x2", 2"/ 3" / whatever will work )
- Weight: 250 # approx
- Footprint required: 24" x 24"

The platen was made perpendicular  to the column and belt. Scab platen added for easy surface
renewal. Additional adjustment added to belt back plate. Narrow and wide backplates.

Still need to make another platen assembly for the contact wheel. Additionaly a nice work light,
magnifier, fold down tool / work table, and additional grinding guides to be done.

For now it works great, maintains tracking very nicely, all adjustments are easy  and quick.

RICH
Title: Re: KNIFE SHARPENER
Post by: Ya-Nvr-No on August 28, 2014, 03:16:50 PM
excellent job, that should make life easier.