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This is a badge bit (BB) that is part of the PEP curriculum.  Completing this BB is part of getting the sand badge in Metal Working.

After a while, tools that you whack with a hammer can get mushroomed.  Did you know that innocent looking mushroom could be dangerous?  Let's fix it!

Here's a pretty cool guy fixing a number of tools with a number of methods:


To complete this BB, the minimum requirements is to fix a mushroomed striking surface on tools like:
  - Chisel
  - Splitting wedge
  - Hammer
  - Punch

To document your completion of the BB, provide the photos or video (<2 min) of the following:
  - The mushroomed head
  - The repair in progress
  - The fixed tool
  - A description of how you repaired it
COMMENTS:
 
Posts: 33
Location: Hemingford Nebraska
20
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Approved BB submission
This post is a quick how to on sharpening and fixing mushroomed chisels to obtain 1/2 point for "Dress up a mushroomed chisel or splitting wedge - ½ point"

I selected a chisel and the appropriate safety gear. I'll be using a pedestal grinder for this process.



The chisel, safety glasses, and earmuffs to complete this project.

First I fixed the butt end. A mushroomed chisel can wreak havoc on gloves not to mention bare skin.



Then I flattened the tip of the chisel. It had many grooves from chiseling into bolts.



I alternated between grinding the cutting angle and dressing the sides as evidenced in the next two photos.





Complete chisel. This appears to be an old air hammer chisel someone's been using by hand, but at least now it's a bit more prepared for work.



Finished chisel ready for use. The full post can be seen on our blog. Permarecycling
Staff note (Mike Haasl) :

I certify this BB complete!

Staff note (Mike Haasl) :

Erik applied for the Metalworking badge which has now been granted!

 
Erik Pehoviack
Posts: 33
Location: Hemingford Nebraska
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That works great, wasn't quite sure where to post. Thanks a bunch!
 
steward
Posts: 12936
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My pleasure!  Nothing like having a BB done to get me going on typing up the BB.  Some day we'll have pages made for all the BBs so folks can get going on the Straw level items as well...
 
pollinator
Posts: 375
Location: Zone 8b Portland
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I cleaned up my splitting wedge today. I didn’t realize this was a potentially dangerous situation until I read this post. It wasn’t too badly mushroomed but I documented the cleanup anyways :-)
47975CCE-288E-41D7-A219-17CF60F35D4A.jpeg
My splitting wedge
My splitting wedge
8B5F11F4-3372-4458-BC4C-F486C4AEBDCD.jpeg
Angle grinder to clean it up
Angle grinder to clean it up
FD36B908-C56E-483A-824D-21E35638D257.jpeg
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C20ADD77-EA95-44A6-A05B-CEBA764505E5.jpeg
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CC2AFE93-F302-469C-89E7-238EDF3EEBC8.jpeg
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Staff note (Mike Haasl) :

I certify this BB complete!  Along with your new Metalworking Air badge

 
Posts: 19
Location: Joint Base MDL, New Jersey
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I noticed my chisel scraper head was starting to mushroom.  

To fix this issue, I first locked the chisel in a vice, then used a pneumatic angle grinder to quickly remove the deformities.

To finish up i used a file to remove the agressive tool marks left by the grinder.
20200807_152855.jpg
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20200807_153056.jpg
[Thumbnail for 20200807_153056.jpg]
Staff note (Mike Barkley) :

I certify this BB is complete. You earned what we call an air badge for metalworking too. Welcome to permies!

 
gardener
Posts: 814
Location: Durham, NC
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I deflated the mushroom on my splitting wedge.  I vinegared it, steel-wooled it, then used the bench grinder to sharpen it and deflate the mushroom.  Then I oiled it with linseed oil.

Here is the mushroom head.  



I cleaned it up some:



Used a bench grinder on it:



Here is the de-mushroomed head:



It wasn't specified in this BB but I also sharpened the wedge.  Here is the before:



and after:



Staff note (Mike Haasl) :

I certify this BB complete!

 
gardener
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I decided it was about time I fixed up some of the chasing tools I use the most and thus mushroom the heads over on the most.  Since it's also a metalworking BB let me apply for this one too.  :)  Oh, I guess for this BB I really only have to do one, but I figured since my tools are small I'll do several.  It's a quick job.  I'm not trying to apply for the BB multiple times here just to be clear.

DSC05551.JPG
This is a shot of the tools I'll be fixing up showing their mushroomed heads.
This is a shot of the tools I'll be fixing up showing their mushroomed heads.
DSC05553.JPG
I'll be using my big belt sander to do the work.
I'll be using my big belt sander to do the work.
DSC05555.JPG
Here is a photo of the tools after grinding off the mushroomed parts and fixing up the ends.
Here is a photo of the tools after grinding off the mushroomed parts and fixing up the ends.
Staff note (jordan barton) :

I hereby certify this badge bit complete!

 
pollinator
Posts: 123
Location: Currently floating off the coast of Senegal.
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So here's my bolster chisel.

I started by using the angle ginder to slice of the curled sections but when I saw the holes I decided to cut about 10mm off the end.

Bench grinder and disc sander to finish.
IMG_20210304_141117_1.jpg
Nicely Mushroomed Head
Nicely Mushroomed Head
IMG_20210304_141902_5.jpg
Half cut off
Half cut off
IMG_20210304_142029_3.jpg
All cut off
All cut off
IMG_20210304_142412_0.jpg
Nasty looking holes
Nasty looking holes
IMG_20210304_142758_1.jpg
Ready for use
Ready for use
Staff note (gir bot) :

Mike Haasl approved this submission.

 
gardener
Posts: 1288
Location: Washington State
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Here is my submission for the Metalworking - Sand - Dress a Mushroomed Chisel BB.

I sharpened and dressed two cold chisels.  Both were dull and rusty.  One had a slightly mushroomed striking surface (and is only shown in the first photo) and the second had a significantly mushroomed striking surface.  I used an angle grinder with a wire wheel to remove the rust and a bench grinder to reshape the striking end and to sharpen them.  I finished with a quick kiss on each edge on the large stationary belt sander then a light coat of linseed oil as they are stored outside in an area protected from rain but not humidity.

To document the completion of the BB, I have provided the following:
 - A picture of the mushroomed head
 - The tool you're fixing it with
 - The fixed tool
1.JPG
two rusty, dull, mushroomed chisels
two rusty, dull, mushroomed chisels
6.JPG
close up of significantly mushroomed chisel
close up of significantly mushroomed chisel
7.JPG
using bench grinder to remove mushroom
using bench grinder to remove mushroom
9.jpg
finishing with stationary belt sander
finishing with stationary belt sander
8.JPG
all cleaned up and oiled
all cleaned up and oiled
Staff note (gir bot) :

Mike Haasl approved this submission.

 
gardener
Posts: 268
Location: NW Washington - Zone 8a : 10 to 15 (F)
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I dressed up the mushroomed heads of two chisels using an angle grinder.
20210315_181006.jpg
Mushroomed heads.
Mushroomed heads.
20210315_181150.jpg
Tools used.
Tools used.
20210315_182202.jpg
Fixed heads.
Fixed heads.
Staff note (gir bot) :

Mike Haasl approved this submission.

 
pollinator
Posts: 305
Location: Pembrokeshire, UK
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I took some time this afternoon to dress a mushroomed masonry chisel. This is something I do quite often to axes (which previous owners have treated badly!) but I never think to take photographs.
mushroom.jpg
The chisel, mushroomy!
The chisel, mushroomy!
tools.jpg
I used a file
I used a file
in-vice.jpg
Held the tool in my trust Record vise
Held the tool in my trust Record vise
done.jpg
Done!
Done!
done-top.jpg
I put a slight bevel on the edges and top
I put a slight bevel on the edges and top
Staff note (gir bot) :

Mike Haasl approved this submission.

 
Posts: 114
Location: VIC, Australia
59
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This gets the occasional whacking when there's bricks that need removing so it gets mushroomed pretty quick

Used a hand Grinder and cutting disk as well as a sanding disk to get the tip back only a little since it's more for brute strength than finesse.
20220212_154210.jpg
Mushroom
Mushroom
20220212_154213.jpg
Chisel in question
Chisel in question
20220212_154344.jpg
Lights, camera, action
Lights, camera, action
20220212_155041.jpg
Done
Done
Staff note (gir bot) :

Mike Haasl approved this submission.

 
pioneer
Posts: 112
Location: Val d'Espoir, Quebec, Canada, zone3a at the bottom of a valley
58
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Found an old mushroomed chisel who need love. I used a power tool with metal brush and disk to clean the rust and dress up the head. Next job, sharpening.
20220728_064323.jpg
The mushroomed head
The mushroomed head
20220728_074510.jpg
The repair in progress
The repair in progress
20220728_073817.jpg
The fixed tool
The fixed tool
Staff note (gir bot) :

Mike Haasl approved this submission.

 
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