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How to square file

RI Chevy

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This was a 3/8 round file conversion chain. I am doing better, but still a long way to go. Chain was basically rocked by previous owner.

Here is how it cut.

78dfca57ef9b4d32cd34f0a5388bf7fc.jpg
e823a1409e32729b8f43a45c0d2b5bed.jpg
 

Leafy

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I'll have to keep looking. I hate buying tools marketed for something specific when there is usually an industrial version that lasts twice as long for half the price. So the angle between the two cutting surfaces should have a minimal radius is what you mean when you say square right? Because the double bevel, triangle, and 6 side don't have 90deg corners between the side of the file that cuts the top plate and the side plate.

I'll have to wait till I either get a non cracked 372 crank case from huztl or a splined clutch drum for the China saw to do a 3/8th chain
 

RI Chevy

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LMAO. I wore gloves. Good observation though!
 

mdavlee

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I'll have to keep looking. I hate buying tools marketed for something specific when there is usually an industrial version that lasts twice as long for half the price. So the angle between the two cutting surfaces should have a minimal radius is what you mean when you say square right? Because the double bevel, triangle, and 6 side don't have 90deg corners between the side of the file that cuts the top plate and the side plate.

I'll have to wait till I either get a non cracked 372 crank case from huztl or a splined clutch drum for the China saw to do a 3/8th chain

It’s not 90 degrees but it needs to have sides <=>
 

brshephard

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I'll have to keep looking. I hate buying tools marketed for something specific when there is usually an industrial version that lasts twice as long for half the price. So the angle between the two cutting surfaces should have a minimal radius is what you mean when you say square right? Because the double bevel, triangle, and 6 side don't have 90deg corners between the side of the file that cuts the top plate and the side plate.

I'll have to wait till I either get a non cracked 372 crank case from huztl or a splined clutch drum for the China saw to do a 3/8th chain

The angle where the file faces meet should be greater than 90, maybe 120 or so
Screenshot_20180606-164459.png
A triangle file is 60 so you won't be able to file the top and side at the same time.

Maybe you could butt two triangle files together face to face. That would give you a 120 degree angle.

Or just buy a grinder :stick:
 

Moparmyway

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I'll have to keep looking. I hate buying tools marketed for something specific when there is usually an industrial version that lasts twice as long for half the price. So the angle between the two cutting surfaces should have a minimal radius is what you mean when you say square right? Because the double bevel, triangle, and 6 side don't have 90deg corners between the side of the file that cuts the top plate and the side plate.

I'll have to wait till I either get a non cracked 372 crank case from huztl or a splined clutch drum for the China saw to do a 3/8th chain
There is no radius to a square corner

A0F0B188-B210-495D-A334-E5EA7264BD2B.jpeg 798220FB-CA17-42E7-81FE-4D121BB2637C.jpeg 10F18704-4162-44DD-A040-1ED829F70544.jpeg E1884BF5-D383-4DFB-AEFF-AC1CF649B029.jpeg 7CD31A8B-1656-433D-BCC3-781E18754EEF.jpeg
 

Leafy

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It’s not 90 degrees but it needs to have sides <=>

So no safe edges, blunt not tapered (or at least never use the tapered section to file with), and minimal radius. Cause there's got to be a radius on the outside edge of a cutting tool or there will be as soon as you take a cut with it.
 

mdavlee

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The sides from the flat is what hits the side plate
 

Moparmyway

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So no safe edges, blunt not tapered (or at least never use the tapered section to file with), and minimal radius. Cause there's got to be a radius on the outside edge of a cutting tool or there will be as soon as you take a cut with it.
Full chisel has an outside square corner
 
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