I have my engine out, the old 2.1wbx. Reasons are a few, won’t go into it right now. But part of the work I need to do involves removing some seals. I thought it try making the VW 681 seal removing too.
Found drawings on the net, here is a pic
I made a model from the drawing in fusion 360. I’ll append this post tomorrow to include a link the the fusion model and a dxf file, for those wanting to make their own.
The drawing calls for tempered spring steel, and if you can do that it’s a good idea. I think mainly to toughen up the sharp tip of the tool.
But I used 1/8 304 stainless, as that’s what I had. Waterjet cut then tip ground on belt sander as described ( more or less) on the drawing. Oh and I added a hole at one end for hanging, and I engraved the tool number ( diamond tip scratch engraving, not the most visible)
Dxf and stop files here, zipped.
shooftie 
#1 by Simon on June 7, 2021 - 7:19 pm
That’s very impressive! Good luck with using them 🙂
#2 by albell on June 7, 2021 - 7:22 pm
Impressive that I can cut that type of thing now with waterjet. Not so impressive as it’s just soft stainless 🙂
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#3 by Manny on June 7, 2021 - 11:09 pm
Great work!
Where exactly did u find drawing? Are there others? Would like to chat more.
#4 by albell on June 8, 2021 - 8:46 am
Hi,
Found the drawings here
http://oacdp.org/tools.html
It’s old aircooled tool plans. But the seal extractor still referenced in the vanagon Bentley .
Alistair
#5 by edbee on June 8, 2021 - 12:08 am
Hi Simon,
Seems like you have access to a pretty cool selection of tools! I recall back in the old days (my first job) we used to do heat treating with oxy-acetylene torches and a bucket of special quenching oil, plus a big barrel of lime for when we had to anneal something (throw a hot piece of metal in the lime and it would still be warm the next morning). At some point we had a new engineer come to work at our shop and he said our heat treatment methods were like some sort of black art, but they worked. Seems to me we had something for case hardening too but can’t recall the details of that. Another option for localized hardening was just hard surface welding up an area and grind it to the desired shape.
And yes, cutting any metal with water is impressive to me.
#6 by albell on June 8, 2021 - 8:44 am
Hi ed,
Well if I had some oil hardening steel around I would have used it 🙂
I suspect the tip of the tool would stay sharp longer with the tougher steel. But I’m hoping ist good enough for my needs.
Took 7 minutes to cut each one on the waterjet. We’re still getting used to the machine, but I think that’s a reasonable cut time. Laser would be a bit faster.
Ab
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#7 by Kevin on June 8, 2021 - 6:13 am
Wow, impressive…
#8 by Pz on June 16, 2021 - 5:19 pm
Looking good Alistair…
#9 by albell on June 16, 2021 - 7:34 pm
Hey Phil ,
The Tool worked to remove engine flywheel end crank seal and the trans input seal.
But it’s not a long term tool. Needs to be tempered steel, the hook point is distorting. But works well enough for me now .
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