Linerlock TutorialI thought Iíd do a pictorial of a linerlock Iím making, might be useful to some, so here we go:
Here are the basic parts, roughly cut out. Theyíre all a little oversized so I can grind them all down together for a tight fit.
Step 1 is drilling all the holes in one of the liners; Iím using UNF-080 screw so I drill with a 1.25mm drillbit:
Step 2 is transferring those holes into the opposite liner. I clamp them together with a piece of G10 underneath for rigidity and also something for the drill to pop out the titanium into, that way I wonít drill into my clamps.
Step 3 is enlarging the holes in one scale to allow the screws to pass though easily, I used a 1.5mm drillbit here. I also countersunk the holes to accommodate the heads of the screws.
Now you can tap the liner with the smaller holes. This is a brilliant tapping jig that keeps everything absolutely perpendicular and stable, UNF-080 taps break very easily, this tool makes them last for ages. Only tap the holes you need for the next step (pivot and backstrap holes in this case) you'll need to pass a drillbit through the bolster and handle material holes later and if they were tapped you might ruin the threads.
Now that the holes are tapped, I screw the two liners together and sand them down so they match.
Next I grind a bevel on the titanium bolsters and a matching angle on the micarta. This creates a dovetail which helps keep the handle material down and looks great when you radius the handle later on. I set the rest on my disc sander to 45 degrees and grind the parts to a blade edge. I step the grits up to 600 so the parts fit tightly.
Here are the dovetailed parts; you can see how theyíll fit.
Now that the parts are dovetailed, I use a clamp to set where the bolster will end, the metal faces are parallel so both sides will be the same and give a super accurate look. Dead simple to make, took me about half an hour but itís worth its weight in gold
I then clamp one of the bolsters to the liner with the blade edge of the dovetail pressed right up against it.
Drill through the screw holes. I plan to have a hidden pivot pin on this knife so I only drill a short way into the titanium through the pivot hole. Once you drill one side, flip it over and do the other bolster.
Here are the bolsters, you can see the half depth hole in line with the pivot, Iíll size this up later to accommodate the pivot head.
I then tap the bolster screw holes and screw the bolsters onto the liners. Youíre now ready to drill the handle material.
I push the micarta dovetail into the angle under the bolster and clamp it in place. Make sure the parts are clean, you donít want some stray grit to cause a gap between the parts. Drill through just like the bolsters.
I then counterbore the holes to fit the screw heads.
Screw the handle material down tightly and check fit. If youíre happy you can flatten the materials down to the same level. I also grind the protruding screws flush with each liner.
I then screw the liners together, grind the screws flush again and attach the bolsters and micarta again. Now itís all one piece you can grind all the way around the profile to make everything match. If all goes well you should end up with tight a fitting dovetail thatís pretty easy on the eye
Next I enlarged the hole to accommodate the pivot head, I did this by sharpening a drillbit the same size as the pivot head to a flat angle.
Hereís how it fits Ė you want it to drop just under the surface of the bolster material.
Now that thereís space for the pivot, you can radius the handle material. Hereís the rough shape, you can see how the dovetail creates a curved join between the bolster and the micarta.
Both sides domed and polished up to 1200 grit.
Next I cut the lock. I covered this in how I make my framelocks but Iíll go over it here to be concise.
I drill two holes at locations where I want the long cut to start and end. I like using holes as when you join up the two cuts that free the lock, it just comes out neater. I scribe two lines between the holes as a guide so I can line up the cutting disc. I clamp the lock-side liner in my drill vice and use a Dremmel cut-off wheel (0.8mm thick), spinning at full speed to cut through the titanium.
Here you can see the long cut, it causes a pretty sharp burr on the opposite side so be careful.
Do the short cut the same way.
Here Iím drilling the hole that I will later press the ball into. I drill using a 1.5mm drillbit and press fit a 1.6mm ball into the hole, the tight fit keeps the ball in place. You want to drill all the way through, you'll need do do this so you can drill into the blade, through the lock so that the ball detent works correctly.
Here are the parts so far.
Here Iíve stuck the spacer material onto one of the liners (the one with the countersunk holes)
Drill through the spacer material
Assemble! Next step is to sand those protruding screws down.
Once theyíre flush you can attach the handle materials again and sand everything down. Looking good so far, I want to blast the bolsters later on to contrast the polished micarta.
Here you can see the lock cut, nice and thin
The liners I'm using are 1.2mm thick.
On a linerlock the bolster covers the hole anyway so hiding it isn't vital.
- '); loadVbCss(yuipath + '/treeview/assets/skins/sam/treeview.css'); //-->
Recent Forum Activityavoidspam
Thought I'd give this a go. Sorry if it's been tried before but I quite like the version on the other side of the pond. Everyone gets a bit creative with their camera's... Plus it's a nice opportunity to see what's out there....:) SamLast Post By: Neil2188 Today, 09:21 AMSupa
I see a lot of 4x4's and motorbike threads on here but not many for the 2 wheeled pedaly variety so here's my brace of 2 wheelers.. My custom DB Peak 29er. She's ugly, she's a brute but she can take a bashing and hasn't bronken in a way I couldn't fix with some allen keys and a hammer! ...Last Post By: Supa Yesterday, 04:02 PMNice65
Recommend a Torch Checklist: (Don't worry about all the questions, just the ones you feel strongly about!) Please mark "x" inside the to indicate your choice. 1: Short Essay Question: What do you intend to use this light for? 2: Price Range: An easy question, but you may change your mind...Last Post By: Mutepost Yesterday, 07:12 PMHovinKnives
I started with knife making now in march, this is my passion now, the knives are getting better and better. My inspiration are Perkinknives, Jay Fisher, mike Carter. Just add me or go visit, all the pictures/albums are available for the public. ...Last Post By: HovinKnives Yesterday, 08:22 PMJedidiah
Welcome to the windswept new Micromesh sales thread. Lots of information in this listing people but basically it is a 'new year, new thread' situation as i did last year in 2013 (and 2012, 2011, and 2010). So yeah, we've been here a while and endeavour to satisfy our customers. Custom orders,...Last Post By: Jedidiah Today, 09:10 AMbardster
Thought I would show off a project I have just completed. It's an 8ft nylon bullwhip. I used 350ft of gutted paracord. It has three braided bellies re a steel handle and bb shot loaded core. The cover is a 16 strand four seam braid, tapering down to 4 strands. The handle is 20 strand diamond...Last Post By: gregs656 Yesterday, 12:57 PMIan Atkinson
I'm fundraising so I have for sale here two Guycep knives, both are new and unused! Prices are for bank transfer with UK postage included, paypal welcome but you'll need to add 4%. Can also post abroad at cost. First up is this large custom knife, 33cm overall, 20cm blade which is bead...Last Post By: Ian Atkinson Yesterday, 10:49 AMAbyrvalg
This is just another Sami style knife I just finished. Blade is 1086 carbon steel with addition of vanadium. Hand forged by Randal Graham. 110x23x3.5 mm. Handle: masur birch and reindeer antler. Sheath: reindeer antler and leather. Decoration - Sami style antler carving. Comments,...Last Post By: K-E Lindblad Yesterday, 12:42 PMRu Titley
We tend to spend most of our summer away camping in some fields / woods that belong to an organic working farm where we volunteer and in kind get to stay most of the summer which gives plenty of opportunity to test out knives and gear , do some bushcraft / survival training and some woodland...Last Post By: bones61 Yesterday, 11:17 AMIan Atkinson
I've got two of Guy's Shadows, my other one is back from being refurbed by Guy today and I've decided to keep that one and sell this one as having two is just greedy really :rolleyes: This one is a customised version of the Shadow which I bought directly from Guy in 2011, it's only ever sat in...Last Post By: Ian Atkinson Yesterday, 10:47 AM