Recommendation? Stack and profile blanks with a CA glue

FredyCro

FredyCro

Joined
Jan 11, 2019
Messages
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Can this be done? Let's say I have thin stock (1-3mm) and want to have exactly the same blanks. Could I stack couple of them on each other with a drop of CA glue and then profile them? While at it would it work for drilling the holes as well?
 
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HSC /// said:
Yes

how many do you have? Try 2 and then 3 together
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I have non yet, i wouldn't try this on my 2x42 but I have a 2x72 incoming.

I was thinking about 1.2-1.5mm for pairing and petty knifes. Cut the stock in stripes and then glue and grind.. Will report on this with pics once I have the grinder set.
 
I think the biggest problem would be heat. When it heats up the glue will lose it's grip. If you manage to keep them cold it might work , but when I profile I use old belts and they heat up alot. Maybe You can drill the pin holes and fix them with bolts.
 
I was thinking the same, more to make identical profiles in some cases rather than save much time. I dont think heat will be much of a problem if you put enough CA, a bit towards the centre away from hottest part.
Let us know.
 
Dimitar Popov said:
I think the biggest problem would be heat. When it heats up the glue will lose it's grip. If you manage to keep them cold it might work , but when I profile I use old belts and they heat up alot. Maybe You can drill the pin holes and fix them with bolts.
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My experience is that CA glue is quite heat resistant. On my 2x42 I have a hardened platen that is glued to the grinder with CA glue and it holds good even with the platen getting very hot when grinding.

I guess I will have to try and see what happens. It seemed like one of those ideas that if it works, somebody would have already thougth of it. Maybe it is really not saving that much time in the end so it is not even worth it.
 
I've tried this with a set of steak knives. With a fresh belt it won't be an issue but I tend to profile with old worm belts and they heat up too much and the glue melts. Also, the CA glue when heated up is irritating to the eyes. Even the drilling can heat up enough to break the bond.

I've also done this with SS bars for bolsters. I glue two long bars together. I cut off what I need for a set of bolsters so the can be drilled and shaped together. Just like above the glue tends to burn out if using a worn belt. Moving forward, I'm just going to run a thin tig weld down one side to hold them. The bolsters are always wider them my blade so I just grind the weld off when I need to separate them.

If your doing multiple blades at once, using a fresh belt is less of a cost.
 
FredyCro said:
Could I stack couple of them on each other with a drop of CA glue and then profile them? While at it would it work for drilling the holes as well?
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This has been mentioned, but I'll ask why not just use a couple of small vice-grip welder's c-clamps? These give you something to hold onto and not worry about heat build up, and when you are finished with one side, you just switch the clamps to the other side one at a time to maintain their orientation. Then you don't have to break them apart if the glue does hold and don't have to spend $ on glue or suddenly run out of glue.
 
weo said:
This has been mentioned, but I'll ask why not just use a couple of small vice-grip welder's c-clamps? These give you something to hold onto and not worry about heat build up, and when you are finished with one side, you just switch the clamps to the other side one at a time to maintain their orientation. Then you don't have to break them apart if the glue does hold and don't have to spend $ on glue or suddenly run out of glue.
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I don't see how clamps would work while profiling on the table? Also if profiling without table you would need to realign the blades everytime perfectly to have exactly the same profile.
 
I do most of my profiling against a table so clamps would be in the way.
Honestly, all in all, would this glue and stack or clamping save any significant amout of time?
If the homework is done on the bandsaw there is so little left to take of with the grinder. It is super fast.
For identical profiles, I can see the point though
 
Scaniaman said:
I do most of my profiling against a table so clamps would be in the way.
Honestly, all in all, would this glue and stack or clamping save any significant amout of time?
If the homework is done on the bandsaw there is so little left to take of with the grinder. It is super fast.
For identical profiles, I can see the point though
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I would do it so there is no homework on bandsaw. Simple straight cuts to cut 100mm wide stock in 5x20mm stripes. Glue and grind. It's just a simple pairing knife profile, put the curve on the back and cutting edge, small wheel attachment for handle curves.

I am just daydreaming of my 2x72 while in work :)
 
HSC /// said:
Since we are going off topic
My new lions process grinder should come next week.
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I looked at them, Claryx, Batkovic (Croatian) and G20 (Slovenian) as well. The nice ones were out of my price range.

I considered building Osg but when I calculated the material cost I came up to 600 Eur. Also the drawings need adjustment and I have no clue about electricity so I gave up on it.

This package was a bit less then 1k Eur with shipping included.
 
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