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Hot Topic (More than 30 Replies) Shaping knife handles (Read 11291 times)
Von Gruff
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Re: Shaping knife handles
Reply #30 - Sep 10th, 2019 at 4:58pm
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After a great deal of time and expense the box finally arrived from South Africa with the giraffe bone and impala horn. Much of this is preordered for 7 giraffe bone and three impala horn handled knives but expect to have sufficient left for other orders in the near future.





  

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Von Gruff
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Re: Shaping knife handles
Reply #31 - Sep 11th, 2019 at 2:40pm
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Everything finished now so was through to see friends this morning and fitted the grip sets to get some picsl








The story and data card to go with the boxes




  

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Von Gruff
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Re: Shaping knife handles
Reply #32 - Sep 12th, 2019 at 5:41pm
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I decided to cut the giraffe bone (or most of it) today to get enough for the knives that are ordered. All of the bones had one end cut off (to facillitate the process for export) so I marked the bone off in 5 inch lengths and cut them with the metal cutting bandsaw.





The knob end still had some of the porpous honeycomb type bone and was not usable but I got 4 good engths from each of the arger bones. One side of all the bones was too thin for the knife handles but may work for pocketknives which I do not do.





I have a guage for the other bandsaw that I use for cutting the scale thicknesses so set to (having the apropriate breathing gear on as there is a lot of dust made and floating in the air.



I managed to get three pieces plus core waste from the larger bones but just two from the smaller ones.



With enough cut for these ones. From the right is a Lion knife, 6 Safari knives and a Light Hunter. The last Safari knife (marked on the taped blade is to be this years knife giveaway and will have curve backed buffalo horn bolsters where the rest will be full giraffe bone handles.

  

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Von Gruff
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Re: Shaping knife handles
Reply #33 - Sep 12th, 2019 at 5:44pm
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Having done that and having three of the Light hunters to do with the Impala horn handles I had a serious look at and some research on the usual handles done with this material and many are in fact bone jiged to resemble the horn so I found where the old time horners(those who work with the horn) would heat the horn to near 350F and it would become pliable so I did that and have it clamped flat so will see in the morning how it has reacted to this procedure. The orders are for handles from the horn that Tony had hunted and wanted for his sons so as there was a set of extra horns in the box I cut these first to check the process.

Cutting the appropriate length from the smaller set



Splitting them lengthwise and removing the core which is dried and loose inside.





Ready for heating and clamping flat

  

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Von Gruff
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Re: Shaping knife handles
Reply #34 - Sep 13th, 2019 at 7:43am
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First stage completed sucessfully with only a short crack at the end that will not effect the length needed for a knife handle. There was some springback from the 9mm thick they were clamped (down from about 16mm) to but as this is old and very dry horn I am going to boil it next in black dyed water and re-clamp to fix the thickness needed. It was sugested that I use oil to boil/heat in but my concern is that there may be oil penetration into the horn and conflict with the epoxy

  

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Von Gruff
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Re: Shaping knife handles
Reply #35 - Sep 13th, 2019 at 4:21pm
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A couple of new designs today. I killed one of my sheep for the freezer and two of the knives I use were in need of an update. Without going into the mechanics of sheep killing I needed a slightlu more directable handle and the knife I had been using for dicing the meat after it was boned out was proving unsatisfactory in that it had a wasted portion of the blade in the curve from the flat to the tip. and while the flat portion was good the curve to the tip made it unwieldly so a while back I made a shorter one but this showed the need for a longer flat portion.
I had wanted to do this for a while and this had prompted me to "get on with it".
The slaughterman has a 7 inch (1/8 1084) blade that I have made a fraction wider at the heel end and a little fuller in the handle while the dicer has a 7 1/2 in x 1/8 in 12C27 SS blade for a 12 1/2 overall length.

  

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Von Gruff
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Re: Shaping knife handles
Reply #36 - Sep 15th, 2019 at 5:02pm
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Todays heat treat and grinding session gives me a few to handsand and start the bolster and handle process.

  

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