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10th November 2008, 05:54 PM #301
Got an email back regarding the laser cutting from Arrow Laser Australia.
This was their response.
No problem with aligning the sheet with the blades - so long as the grain is clearly marked when it arrives from Bohler and you tell us WHICH edge is to be aligned. A quick sketch would be the go.
When you ask about "narrowest parallel cuts", I assume you mean how close can we put a series of single line straight cuts - if so, then I would say about 1 or 2mm apart. This all depends on how many and how long the cuts are and how the material behaves. As far as de-carbonizing - absolutely no idea and warping will be trial and error, as tool steel is one we rarely cut. The cut width will be about 0.3mm wide, but our machine has kerf compensation so the parts will come out within 0.1mm of your dimensions.
I quickly took the cost's given to me by Arrow Laser, and the Stanley plane blades are sitting at $18.26, which includes the sheet cost, the laser cutting, and milling the bevel, I am still waiting on the cost of the heat treatment, plus the cost of the Lever Screws, but I suspect it will come to just under $20 per blade. So we are still within the original estimate of $15 to $20 per blade.
I will keep you informed at people get back to me.
Below are the modified chisels plans ranging from 3 mm to 40 mm widths. Post, if you are interested in some chisels.
Attachment 88280
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10th November 2008, 06:50 PM #302SENIOR MEMBER
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I'm certainly interested in a couple on chisels, subject to reasonable price of course. Keep up the good work, I can't believe your patience, sainthood for sure. phil
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10th November 2008, 08:20 PM #303Senior Member
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10th November 2008, 08:24 PM #304
You could safely put me down for a set of chisels TS
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10th November 2008, 09:08 PM #305
To keep things simple, I will only offer the chisels as a set. It is hard enough keeping track of 40 plus people ordering almost 500 items . (200 plane blades plus 200 lever caps plus 100 plane blades for wooden hand planes)
*EDIT* still taking order for Stanley plane blades with lever caps, still have half a sheet left.
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10th November 2008, 09:23 PM #306
Am I correct in thinking that the proposed chisels are also from 2.5mm M2 sheet? That sounds like a very thin paring chisel, perhaps a little too thin for the small sizes?
Perhaps a 4mm sheet would be more appropriate? Just putting it out there, feel free to slap me down.
Edit: Just looking at the Blue Spruce paring chisels, they use 1/8" (3.2mm) A2 material and describe the small sizes as 'quite flexible'."Human beings, who are almost unique in having the ability to learn from the experience of others, are also remarkable for their apparent disinclination to do so."
- Douglas Adams
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10th November 2008, 09:37 PM #307
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10th November 2008, 10:08 PM #308
Yes I would be interested in plane Blades Stanley No 4, 2" wide ,I take it they would be around $20.00 each What about freight
I will check out how many I need and get back to you at the weekend
Regards
David
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10th November 2008, 10:18 PM #309
I'd also like to express an interest in the chisels, subject to cost. Also feel that the 4mm thickness might be better.
If you are trying to use up the last bit of the 2.4mm sheet, I'd be interested in a couple of non-standard plane blades ( I understand if you say no, non-standard cuts can be an expensive exercise.)
Anyway, the size I'd be looking at would be 32mm wide x 80mm long, no slot.
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10th November 2008, 11:51 PM #310
At 3.5 mm they would be thicker then the Blue Spruce Chisels, which are very nice chisels, and work very nicely I am told. These would be pairing chisels for fine cutting dovetails and fitting joinery. Not the kind of chisel you would whack with a hammer or try to pop nails out wood with. If you do not do fine delicate work then these chisels will not be for you.
Starting another sheet, is highly unlikely, there would have to be huge demand for chisels to justify it. Plus dealing with that much more stuff just makes things a little unmanageable.
As for other custom blades or shapes, that would not be possible as it would drive our cost up through the roof. Every new shape is another item that needs to be programed into the laser cutter, and its not worth it if we are doing one of that and two of this.
Postage would be $10 if you live outside Victoria using an Australia post 3 kg pre-paid post pack. If inside Victoria $6 dollars should do for postage.
I will get a price for the chisels, waiting to hear back from some people. We can make the set smaller, say only 6 chisels to make the total cost more manageable. A set of 3 mm, 6 mm, 9 mm, 12 mm, 15 mm, 20 mm, because the large sizes would not be as handy for fine pairing chisels, What do people think about a set of 6 chisels?
But lets first find out how much it will cost. Worst case it would be under $15 per chisel, since the material cost would be $4.17, with milling of a bevel would be $3 - $5, then the heat treatment could be $2, then the milling flat would be, possible, maybe $5. But all just guessing, I need to hear back from Rippon Grinding first.
My first choice it to make things simple and fill the sheet up with Stanley Bench Plane blades first. Chisels are the back ups only. Also a set of six chisels would only use up, 23375 mm square of M2 sheet, it would only take up little more space as two to three 2 5/8" Stanley Plane Blades.
*Edit* Just looked at the sheet that Laser sent me, they will laser cut and supply the materials for the lever caps for $3.60 each, with the bevel grinding costing hopefully less then $3, plus $1 the cap screw, we are just inside our $8 estimate, so that is looking good.
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11th November 2008, 12:27 AM #311.
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Helmut, just thought I would post a pic of these chisels - (6, 8, 12, 18 & 24 mm) they are made from 3mm thick McJing M2.
$3 - $5 for a bevel grind is a bit steep. On the 3 mm chisel it will take ~60 seconds to grind a bevel and as it's M2 you can't really damage it. OK the 20 mm one will take a bit longer but surely people should be able to grind their own and using a 6" wheel make a nice hollow ground one at that.
I will be interested in 2 sets of whatever sizes - preferably with no bevels.
If they are just paring chisels the smaller ones maybe don't need a flared tang collar - can save a bit of metal that way?
Cheers
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11th November 2008, 12:40 AM #312
Agreed $3 - $5 is worst case in my view, since $5 is what rippon charge to grind the bevel on the 8 mm plane blades from batch 02.
I would be happy to grind my own bevels since it is only 2.5 mm thick, however others may not feel the same. If it ends up less then $1 per bevel then I think we just let Rippon do it for us, if not we could just make the bevel grinding an optional extra.
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11th November 2008, 12:51 AM #313.
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11th November 2008, 01:11 AM #314
With thumbsucker, Bobl, switt775, Slow6, pommyphil, Kevjed expressing interest in chisels. Sheet 2 is filling up fast with only 152620.932 mm square left. The next 1 or 2 members who will order stanley plane blade will be the last in. I suspect we will run out sheet 02 very soon.
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11th November 2008, 01:26 AM #315
Count me in for 1 chisel set, please
Cheers
Jeremy
If it were done when 'tis done, then 'twere well it were done quickly
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