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Safe-T-Planer mark 2
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Author:  Tai Fu [ Fri Sep 20, 2019 9:20 am ]
Post subject:  Safe-T-Planer mark 2
I have been working on improving the safe-t-planer. The cutter really doesn’t star sharp because either the Taiwanese clone cutter is using poor quality HSS cutter, or because the steel burns at the slightest hesitation that the cutter has to be sharpened after every cut. So I said, I had enough. I took the cutters and enlarged the slot so I can fit a CCMT insert into it. I would then braze the insert on. Right now I haven’t had any luck with borax so the insert held poorly (braze fuller would not wet even though both surfaces are clean), so I ordered some black flux and will try again. Initial testing shows the carbide infused cutter cuts wood like it’s not even there, even with some heavy cut. And the carbide won’t dull. If it does dull I just use a diamond wheel to sharpen it.

Why won’t they use carbide for this?
Author:  Clay S. [ Fri Sep 20, 2019 9:35 am ]
Post subject:  Re: Safe-T-Planer mark 2
The safety planer is basically a "gadget" and if you make it too expensive people will buy the proper tool instead.
Author:  Tai Fu [ Fri Sep 20, 2019 9:58 am ]
Post subject:  Re: Safe-T-Planer mark 2
I shouldn't be.

It allows people who doesn't have money or space for a thickness sander to thin down acoustic guitar boards where otherwise they couldn't do it easily. Not everyone has the ability to have a thickness sander.

This is what the cutter look like right now. I just need something other than borax as flux, because borax isn't working (and it's the flux, I tested the brazing rod on a piece of mild steel to medium carbon steel, same thing, metal will not wet and a light tap with a hammer dislodges it).

Image
Author:  Clay S. [ Fri Sep 20, 2019 2:34 pm ]
Post subject:  Re: Safe-T-Planer mark 2
Hey Tai,
Since you have a milling machine, instead of trying to modify a safety planer device why not make a cutter head that will accept the screw on insert tooling 4 sided cutters the helical head planers use. This might also be a good tool for Chris Ensor to make.

https://ballewsaw.com/amana-a-12-12mm-x ... xwQAvD_BwE
Author:  Colin North [ Fri Sep 20, 2019 2:45 pm ]
Post subject:  Re: Safe-T-Planer mark 2
Or indeed you could have a side line of supplying replacement/upgraded cutters for the original Wagner safe-t planer which are unobtainable.
Author:  Jim Watts [ Fri Sep 20, 2019 2:55 pm ]
Post subject:  Re: Safe-T-Planer mark 2
How do you braze to Aluminum?
Author:  Tai Fu [ Fri Sep 20, 2019 8:29 pm ]
Post subject:  Re: Safe-T-Planer mark 2
I don't really want to modify the head, but I can't drill and tap HSS either...
Author:  Tai Fu [ Sun Sep 29, 2019 9:55 am ]
Post subject:  Re: Safe-T-Planer mark 2
I finally got the carbide insert brazed on. I used a flux called "Brazetec" or something, probably similar to Stay Silv white flux. It worked and now my safety planer is working 10 times better. It will cut anything, purpleheart, maple, mahogany all without burning, dragging, or going dull after 5 minutes of use.

Someone should make brazed carbide cutter or adapters to take CCMT inserts for this. The downside though is there are less protection should the piece be sucked up... the carbide will chew through it like it's not even there. So definitely use it to get your wood close to size and use a thickness sander to arrive at the final thickness.
Author:  DanKirkland [ Sun Sep 29, 2019 4:48 pm ]
Post subject:  Re: Safe-T-Planer mark 2
Tai Fu wrote:
Someone should make brazed carbide cutter or adapters to take CCMT inserts for this


Since you make stuff, why don't you make them?
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