无翼乌漫画全彩集日本漫画大全

无翼乌漫画全彩集日本漫画大全

Saturday, April 25, 2009

Making an Oland Tool

无翼乌漫画全彩集日本漫画大全



MAKING AN OLAND TOOL
Using Tormek Jig 185 and a Modified Belt Grinder





I recently have been making and using Oland Tools. These are incredibly simple to make and even simpler to use. They are also very inexpensive, virtually catch proof, leave smooth finishes even on dry softwoods and keep their edges for a long time.

I have some very nice bowl gouges (Thompson, and if you need great gouges, his are the best I've seen), but honestly, I'm wondering what to do with them now that I have been testing my Oland Tools.

I use the belt grinder set up described earlier using the Tormek Jigs.

How I Made the Tools
Notice I didn't say "How to make the tools". That's because I used a metal lathe which has a milling attachment. But you could make them with your wood lathe if it can handle a 5/8" rod through the spindle or even a drill press. The metal lathe made making the tools fun.

First,
I got some 303 Stainless Rod 5/8" diameter for the 1/4" tools and 3/4" for the 3/8 and 1/2" tools. You need to hold the HSS (High Speed Steel) bits in the rod with a set screw so the diameter of the rod needs to be big enough to hold the bit and thick enough to safely thread the set screw. Make the tools a length that you like. Make them double ended if you like.

Second, I bought some stainless set screws from McMaster with flat bottoms. You could use any.

Third, I measured the diagonal on the HSS bit I wanted to use and drilled a hole about 2 inches deep down the end of the rod. The bit didn't quite fit, so I relieved the bottom edges on the belt grinder and it slipped right in. This is a good idea in any case since it keeps the bit from cutting into the stainless steel shaft with its sharp edges.

Fourth, I milled a bevel on the shaft and then put the shaft in the milling attachment and ground a flat. This flat is necessary since it provides the Tormek jig a place to register. Without it you could still use the jig, but you wouldn't get back to where you started from each time because you'd be guessing. The flat takes the guess work out of it. Have someone mill it for you or put the rod in a drill press vise and hold it against a grinding wheel or belt to make the flat. How deep isn't important-- about 3/8" or 1/4" wide is what you want.

Fifth, I located the rod in a drill press vise with the flat at dead center. I drilled the hole for the set screw and then tapped it. Use whatever size you want on the set screw, as long as it isn't too big or too small.

For the 5/8" Rod, I found it a bit skimpy to hold, so I put golf club grips on it. You can get them on Ebay. I bought the self-shrinking ones.

For the 3/4" Rod, I make it double ended and it feels good in my hand without the golf club grip. You can do whatever feels comfortable.

SHARPENING THE TOOL
First,
You need to shape it. I'm not going to get into detail, but basically, put it in the 185 Jig and using a course tough belt, grind it to the shape you want. You can get a pointy shape or a flat tip or a tip that leans to the right (making a longer bevel on the left for hollowing), etc. Rough shaping takes a few minutes at most. I use the JS 2 setting (45 degree angle for bowl gouges).

Next, You need to polish it. I put on my oldest, finest, worn-out belt and charge it with black or green buffing compound. Three seconds later it is mirror polished. And razor sharp. Make sure you spend a bit more time on the center than the sides or you will end up making it too pointy. This is easy to fix by spending a bit more time on the center of the tool.

It takes longer to load the tool in the 185 jig than it does to sharpen it. It takes longer to read this than shape and sharpen it. You could not do this on the original Tormek without destroying the wheel and becoming older in the process.

USING THE TOOL
Some people think the Oland Tool is a scraper. I SOMETIMES
use it as a scraper, but it isn't in normal use. You find your bevel and ride the bevel just like a bowl gouge. The shavings are like gouge shavings (see photo), not like scrapings. The bevel is a bit tricky to ride and get a smooth sweet sweep, but on the other hand it is almost catch proof. I'm still learning and am very impressed with how it slices through very tough, dry wood. It holds an edge longer than my best bowl gouges as well. I haven't tried green wood yet.

COST OF THE TOOL
It cost a few dollars for the 303 Stainless Rod. You could use any rod. I bought mine on Amazon (Small Parts). The HSS inserts are cheap -- $2-4 bucks each. You can get them from McMaster (a bit expensive), Enco, Grizzly, MSC or any machines shop supply. You can get them for almost nothing on Ebay as well. So for less than ten or twelve dollars you have a very nice tool.

Given the repeatability of the Tormek jig in the belt grinder, only a tiny amount of steel is removed, thus, a bit should last for a very long time. You can also use both ends ofthe bit for different shapes.

Many thanks "AROUNDTHEWOODS.COM" which introduced me to Oland Tools. You should check it out if you are going to make one yourself-- he goes into more detail than I did including the history (interesting) and some other matters. He also has some videos of the tool in use which are worth watching.







Sunday, December 30, 2007

Video Review

Review: Tormek’s new TNT-300 Woodturner’s Instruction Box $24.99

I bought a copy of the Tormek's Woodturner’s Instruction Box from Hartville Tool the other day. Is it worth the $24.99? I think so, especially for a beginning wood turner (like me) or a beginning Tormek user. It’s nicely packaged in a clamshell cardboard box and contains a spiral bound manual (most of which is free on Tormek’s website) and a very nicely done DVD. I have to admit I’m a fan of Jeff Farris. I bought my Tormek from him when he was an "independent" seller of Tormeks. Now he is a Tormek employee/evangelist. He is a very good communicator/instructor and after watching the video, a pretty good craftsman as well. (I have to admit, I wondered if all he could do was sharpen tools, or if he can actually turn wood. He does turn and quite well.)

The video showshow to use each of the Tormek jigs as applied to lathe tools. It also shows how each of the tools are used. This latter feature was the most interesting to me. I’ve watched other lathe videos (I’ll review another time), but this one makes the cuts very easy to see and I found it useful. In fact, I was thinking of selling my copy after watching it once or twice, but I’ll keep it for future reference.

If you are an experienced turner and understand how to use the Tormek jigs, this probably isn't for you. On the other hand, as a Tormek user, I found it useful to watch Mr. Farris set up the jigs and use them.

Tormek Article Beta

I just created my first blog, "sharpenit" and uploaded a white paper about using Tormek Jigs on a belt grinder. I need to finish the paper, maybe tonight, but if you happen to see it in the meantime, let me know if you have any questions.



无翼乌漫画全彩集日本漫画大全Using the Tormek Jigs with a 2 x 72” Belt Grinder

A Better Tormek


The Tormek wet sharpening system is an expensive sharpening solution ($399.00 without jigs, approaching $700.00 with a full set) with just one advantage and many disadvantages over dry grinding using the same Tormek jigs. The main value of the Tormek is not its wet abrasive wheel, but the various ingenious jigs that allow for precise and often repeatable tool sharpening.

I’ve experimented with the Tormek jigs on dry grinders but have not been satisfied with the results. Dry wheels need dressing, balancing, change size, are normally less than an inch wide and allow only two grits (per grinder). I have also tried “paper wheel” systems which share the same deficiencies as the dry grinders, except the wheels don’t change size much. Metal removal is very aggressive on dry grinders unless you turn the machine around (removing the safety guard) and grind with the wheel spinning away from you. (This is a must for safety reasons with the paper wheels).

Finally, I adapted my Grizzly 2 x 72” Knife (Belt) Grinder (G1015 Knife Belt Sander / Buffer $395.00 + 74.00 freight www.grizzly.com/products/Knife-Belt-Sander-Buffer/G1015) for use with Tormek jigs and the results are outstanding.

Here is a table showing the pros and cons of the Tormek versus using the Belt Grinder + Tormek jigs, which are widely available without having to buy the Tormek machine.

Feature

Tormek

Belt Grinder+Tormek Jigs

Water Cooled

Yes

No

Wheel remains true

No; wheel must be maintained with expensive diamond truing device which is also needed to remove and inevitable uneven wheel wear.

Wheel is always true, and is therefore not a variable.

Wheel needs constant grading from coarse to fine

Yes, this is a most tedious chore: wearing away the expensive grindstone with a handheld stone ($20) switching back and forth between the two grits.

Never, just change belts. As belts wear out (which takes a very long time) they can be used for finer operations or even polishing.

Wheel remains same diameter at all times

No, jigs have to be reset (using a nifty plastic tool) to take into account the ever-decreasing wheel diameter.

Yes. Diameter is a constant, not a variable.

Abrasive Cost

High ($139.99). When the wheel goes from 10” to 7” it becomes a paperweight. At that point the jigs don’t work but the stone has 2/3 of its original area!

Very low (Belts are range from $1.80- $10.00, with very good quality ones at $3.00)

Wheel width

2.0 inches

2.0 inches

Overheats steel

No

Yes, with a heavy hand; you need to develop a light touch, which isn’t hard to do using the Tormek jigs.

Grits Available

2 (Coarse and medium depending on when you graded the stone. After truing it with the diamond, it also has a very coarse finish).

Dozens of belts ranging from garnet to zirconium to cork, leather, blank cloth and a Scotch Brite type of material. Grits from 36 to polishing.

Mirror finish

Very slow and never truly mirror; removing the scratch marks from the steel is basically impractical using the slow leather hone. The “fine grading of the stone still leaves very visible scratch pattern on the tool edge.

Easy using two or three belts. True mirror finish with no visible scratch pattern.

Use as a hone on the sharpened face.

Yes, but very, very, slow and if done freehand can round over the freshly sharpened tool, undoing your sharpening. Also available are some leather disks for honing the inside of the gouges.

Easy using blank cloth belt and green chrome oxide buffing compound. The jig setting remains the same. To hone the inside of a gouge, I take a piece of stiff leather charged with buffing compound and give it a couple rubs; that’s all.

Resetting jig to hone

Yes; honing wheel is 8.75” which is not the same size as the ever- diminishing grinding wheel which means you have to continually reset the jigs or do it freehand.

No, just change belt, jig remains at the exact same setting.

Reshaping tools

Yes, but painfully slow and uses up wheel quickly. Even Tormek recommends using a dry grinder for preliminary shaping.

Very easy; a new profile on a HSS bowl gouge or skew can be shaped in 2 minutes and brought to a mirror finish in another minute. A scraper takes a few seconds.

Shortens Tool Life

No, once shaped the tool can be sharpened quickly with very little steel removal.

No, once shaped the tool can be sharpened quickly with very little steel removal. A fine belt after the tool is shaped guarantees this. A very fine belt might even remove less steel than the Tormek.

Speed

Slow

Very fast

Safety

Very safe

Safe if used properly; safer than a paper wheel or dry grinding wheel, but more dangerous than a Tormek. On the other hand, much safer than using a lathe or table saw.

Size

10” foot print, 35 pounds.

36” foot print; weighs 100 pounds (due to heavy duty motor)

Cost

About $400.00 w/o jigs

About $400.00 w/o jigs

Other uses

None

Many additional shop uses. Can be used as a sander for sanding or shaping any material (wood, metal, composites, aluminum etc.), removing burs, polishing.

Setup and Cleanup

A pain. Fill the container with water, wait for the stone to be saturated (a few minutes), check if the stone is true, check whether it is graded coarse or fine.

Cleanup is also a pain; empty the water, clean the water tray of some sticky sludge.

No set up. No clean up.

Add-ons to make life easier

A cafeteria tray to hold the Tormek to keep the water from getting on your bench.

A momentary foot switch (search Linemaster on Ebay) so you can keep both hands on the tool and if you need to slow down, you can let the grinder coast.

A dust mask is also good, though as I have it set up, the belt is grinding away from the tool, which makes for much cooler grinding and the dust is flung away from me.

Manual

Incredibly good manual by Tormek inventor/genius Torgny Jansson; a must have and well worth the cost.

Basic machine set up. No instructions on sharpening.

Note to Mr. Jansson: Make a 2x48” belt grinder that is fully compatible with the Tormek jigs. Two speeds (a slow and medium) that would be great (variable speed would be even better, though costly). Sell Tormek belts at twice the cost of the 2x72” belts and make a good and continuing profit on consumables. Tormek’s market would expand to include knife makers and other metal and wood craftsmen.

Adapting the Tormek Jigs to a Belt Grinder

I use the Grizzly Knife Grinder. There are other nicer grinders available such as the Beaumont Metal Works (about $800.00, beautiful and elegant). However, the Grizzly is a bargain at half the cost and very solidly built. It also has a spindle for a buffer or wheel.

Get the machine situated on a cart or bench so that the belt can be used in horizontal mode. I made a crutch to hold the head rather having to lock it with the allen screw. Take a good look at the Tormek to see how the Universal Tool Rest is situated (the horizontal position). Make a bracket to hold the tool rest. I made my first one out of wood to test the geometry. It worked fine, so I welded some scrap steel angle material, drilled a couple holes in it and the Horizontal Base (SKU2241) and attached it. Once in position, you can easily slide out the Universal Support Tool and use the grinder in any position as well.

Buy the following parts at www.sharptoolsusa.com, www.woodcraft.com, Hartville Tool or Advanced Machinery on the Amazon.com website, or any other Tormek dealer.

Name or Tormek SKU

Name/Description

Price

2241

Horizontal Base (Micro Adjust Universal Support Tool) or Tormek XB-100 Horizontal Base for Universal Support

16.00


Micro Adjust Universal Support Tool

31.99

WM-200

Pro AngleMaster

18.99

2130

7031

Torlock Tool Rest and Lock Knob (Tool rest/table attaches to Universal Support) for grinding chisels, scrapers etc.) Also sold by dealers for $26.99.

24.00

4.10

SVD-85

Fingernail Gouge Jig (Vital jig for holding turning tools)

69.99

TTS-100

Tormek Turning Tool Setter (Must have, works with Fingernail Gouge Jig SVD-85)

24.99

Other Jigs

You can also get several other jigs to handle chisels, knives and other tools. They are detailed in the Handbook with very complete directions and diagrams.


HB-10

Handbook (very well worth the money) Edition 9.5

16.99

Using the Tormek Jigs With the Belt Grinder

I have to say using the Tormek Jigs + belt grinder is a joy. No more setting up the machine, adding water, cleanup, grading the darn stone back and forth, keeping the stone true, changing the setup jig to take into account the ever diminishing stone, changing the setup for honing, no free hand honing. It’s wonderful.

I use a coarse belt (36 or 80 grit) to achieve a shape on a knife, turning tool or other tool. Once that is done, it’s done. After that I can use a 120 or 220 grit belt to keep the edge fresh with just one or two quick passes. This would never work without the jigs, but the amount of steel that is removed (after initial shaping) is tiny, (about 1/64th to 128th of an inch) so the tools will have a long life. (That means 64 sharpenings before an inch of steel is used up). In addition, since there are only one or two passes, the tool doesn’t have time to heat up. (Some tools, particularly ones with tiny blades could heat up, so use a very light touch). I have reshaped a bunch of gouges, scrapers and skews with my $3.00, 36 grit blue belt and it doesn’t seem to have appreciable wear.

I found that using the grinder with the belt moving away from the tool rather than into the tool solved two problems: heat build up was minimized and the cut or grind was much less aggressive. The jigs hold the tools firmly so there is no possibility of the tool getting away from you or even grinding the wrong part of the tool. If you are using a blank cloth belt charged with buffing compound, it is essential that the belt move away from the tool to prevent it from digging into the belt and shredding it.

The Tormek Turning Tool Setter (TTS-100) along with the jig for gouges and skews (SVD-185) is the most important element of the system. It makes it completely fool proof to keep a razor sharp mirror polished edge on lathe gouges, with the belt moving away from the tool. The original Tormek ProAngle Master (WM-200) is also a must for setting the angles on knives, scissors, scrapers and other tools. The Tormek Manual, written by Mr. Jansson, inventor of the Tormek, is also a must; without it the jigs are impossible to understand.

List of Suppliers


USA Knifemaker Supply -- Excellent source for all sorts of knife making supplies and abrasive belts.

McMaster Carr-- The "be all" and "end all" of of every sort of machine, part, raw material, etc. A truly amazing company with no minimums and reasonable same day shipping.