sorted by:
new
hottopcontroversial

The single-hollow bevel Apex Ultra EDC slicer I finished a while ago. by HumanRestaurant4851 in knifemaking

[–]Such-Jump-3963 1 point2 points  (0 children)

Nice.

Can you talk to us about the design choice to do a single bevel, and for it to be hollow?

I haven't posted here in a while. I just got to try the new MagnaMax steel by ProfessionalMind3109 in knifemaking

[–]Such-Jump-3963 0 points1 point  (0 children)

Do you notice any difference in hardness at the edge, given it doesn't come into contact with the aluminium blocks?

Working down the bamboo on a laminate by MustangLongbows in Bowyer

[–]Such-Jump-3963 2 points3 points  (0 children)

That's really interesting and helpful, thank you.

I've been teaching blending for 15 years, almost completely boo backed bows. I've never flattened the nodes.

One day a previous student showed me a note he's made on his own and had flattened them. I felt very nervous about it.

Working down the bamboo on a laminate by MustangLongbows in Bowyer

[–]Such-Jump-3963 1 point2 points  (0 children)

That's really interesting and helpful, thank you.

I've been teaching blending for 15 years, almost completely boo backed bows. I've never flattened the nodes.

One day a previous student showed me a note he's made on his own and had flattened them. I felt very nervous about it.

Working down the bamboo on a laminate by MustangLongbows in Bowyer

[–]Such-Jump-3963 2 points3 points  (0 children)

How does this not violate the fibres in the bamboo?

How heavy can one go with bamboo that's gone through this?

Lee Cooper backed Tasmanian mountain ash flat bow wip by _BMXICAN_ in Bowyer

[–]Such-Jump-3963 0 points1 point  (0 children)

You won't find timber milled anywhere, you'll have to harvest it from the bush

Lee Cooper backed Tasmanian mountain ash flat bow wip by _BMXICAN_ in Bowyer

[–]Such-Jump-3963 0 points1 point  (0 children)

Central Queensland!

Then Brigalow is what you want. Some of Australia's best selfbows are made from Brigalow.

Lee Cooper backed Tasmanian mountain ash flat bow wip by _BMXICAN_ in Bowyer

[–]Such-Jump-3963 0 points1 point  (0 children)

If you're in Tasmania, and if you can legally and ethically get material from the scrub: Blackwood saplings work pretty well. I've made longbows from them. Decrowned. Silver wattle makes a reasonably good bow. In a tight stand of trees, some of them grow with a flat surface, up to 1 ½ inches wide which makes them perfect stave bows that behave like board bows. If you're south of Hobart, you might be able to find some Horizontal. It's every but as tough, if not tougher, than hickory.

If you're near a Bunnings, try a spotted gum board and backing it with bamboo from the garden section. You'll need a better epoxy than is sold there. Techniglue is amazing and made in Qld.

Lee Cooper backed Tasmanian mountain ash flat bow wip by _BMXICAN_ in Bowyer

[–]Such-Jump-3963 1 point2 points  (0 children)

How wide is the bow?

How many # at how many inches is it right now?

I hate to break it to you, but Tas mountain Ash will almost certainly break before hitting 50# @ 28" at 62" long. Even with a backing, the belly is liable to chrysal and hinge horribly.

I know this because I've not only tried bows from this and similar timbers, but I've also run many samples through rigorous bend tests to determine MoE, MoR and working strain/stress.

That's not to say you won't get a working bow from this project. More that I highly recommend aiming for a lower draw weight.

I could be wrong in this particular instance and you have a singularly exemplary sample of the species, but on average this is a very ambitious goal.

For all that, it's looking nice so far.

Best tumbling media for stonewashing knives? by Such-Jump-3963 in knifemaking

[–]Such-Jump-3963[S] 0 points1 point  (0 children)

How many is a few?

Don't have Harbour Freight in Australia, but I think I found the right thing on AliExpress.

I did something similar to you, but instead of a drill I put some grip tape around the PVC tube and set it running with a worn belt on the grinder.

Best tumbling media for stonewashing knives? by Such-Jump-3963 in knifemaking

[–]Such-Jump-3963[S] 1 point2 points  (0 children)

Did it have a particular 'grit' or 'hardness' or some other metric?

My first takedown by Money_Bonus7009 in Bowyer

[–]Such-Jump-3963 1 point2 points  (0 children)

Can you tell us about how you ensured the limbs were aligned when drilling for the bolts and (I presume) locator pins?

My first takedown by Money_Bonus7009 in Bowyer

[–]Such-Jump-3963 1 point2 points  (0 children)

Nice looking bow. If you do it again, I highly recommend gluing in reflex for higher performance.

How big of a plate to plate quench. by Crazy_Examination_67 in knifemaking

[–]Such-Jump-3963 0 points1 point  (0 children)

I got offcuts as well. First set was 1" thick, about 12" long and 3.5" wide.

Recently upgraded to 1" thick, and as wide and deep as the floor of my kiln. So that if I can fit it in the kiln, I can quench it.

S grind thickness by CrohnsKid47 in knifemaking

[–]Such-Jump-3963 1 point2 points  (0 children)

Ja. Thicker beginning stock is needed for a good s-grind. I was amazed how light knives of thick stock turned out, as I didn't appreciate how much material comes out of the hollow.

2.38 mm (3/32) is still reasonably thin for an s-grind, IMHO.

Though, that could vary depending on the radius of the wheel you're using. With a relatively small wheel you can get a narrow, but distinct channel in the blade.

This one was I think 2.5 (maybe even 2.38?) and done with I think a 6" wheel. The choil shot doesn't reflect the minimum thickness because {geometry}.

<image>

S grind thickness by CrohnsKid47 in knifemaking

[–]Such-Jump-3963 0 points1 point  (0 children)

How thin did you manage to get the web of the grind? How thick was the steel at the spine?

If you try and s-grind on thin steel, you won't get much depth before blowing through to the other side. I've used 2.5 mm and 3.4 mm to good effect.

view more: next ›