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Repaired Grappler

Trilby · 18 · 710
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Offline Trilby

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Repaired Grappler
on: May 28, 2024, 08:22:59 PM
Recently i cheaply got a broken Grappler.
Unfortunately it is a Gen1 Model with the badly designed Part for the Adjustment Screw.
Obviously in a woeful State with the Pliers basically useless

* GrapplerDef1.jpg (Filesize: 192 KB)
« Last Edit: May 28, 2024, 08:56:40 PM by Trilby »

Offline Trilby

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Re: Repaired Grappler
Reply #1 on: May 28, 2024, 08:24:13 PM
I disassembled it and straightened the broken Part

* GrapplerPart.jpg (Filesize: 89.38 KB)

Offline Trilby

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Re: Repaired Grappler
Reply #2 on: May 28, 2024, 08:26:13 PM
Finally i taped the Hole and bridged the "Chasm" with a short M4 SetScrew

* GrapplerFixed1.jpg (Filesize: 147.23 KB)

* GrapplerFixed2.jpg (Filesize: 165.64 KB)

Offline Trilby

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Re: Repaired Grappler
Reply #3 on: May 28, 2024, 08:31:45 PM
It is perfectly usable again. Only requires a slightly different Technique to retract the Pliers. That big Hole which is now filled with the SetScrew was providing Clearance for the Pin of the ReleaseButton. So to depress the Button fully (to release the Pliers), the Handles have to be opened slightly. No Issue at all

I strongly recommend this cheap Hack for Anyone that has the same Gen1 Grappler. That Part will break sooner or later at the huge Hole for the Pin. Simply filling it with a SetScrew provides the needed Stability for Years to come
« Last Edit: May 28, 2024, 08:50:37 PM by Trilby »

Offline Trilby

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Re: Repaired Grappler
Reply #4 on: May 28, 2024, 08:43:07 PM
Perfect Combo

* 20240528_204145.jpg (Filesize: 114.96 KB)

pr Offline Juan el Boricua

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Re: Repaired Grappler
Reply #5 on: May 28, 2024, 11:46:42 PM
Congratulations on having such a unique locking pliers and, kudos on a job well done!  :hatsoff: :tu: :cheers:
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us Offline Alan K.

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Re: Repaired Grappler
Reply #6 on: May 29, 2024, 02:55:12 AM
Brilliant repair! Did you weld in the set screw?  It would need something to make the two parts one again.
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us Offline IMR4198

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Re: Repaired Grappler
Reply #7 on: May 29, 2024, 03:11:29 AM
   It almost seems like the set screw just provides enough tension to keep the parts in line.  He said he cut threads with a tap then just turned in a brass set screw.  That would have been tricky.   Evidently he got it to work.  I don't think I would have thought to repair it that way.  Best wishes.  G
 :think:
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Offline Trilby

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Re: Repaired Grappler
Reply #8 on: May 29, 2024, 09:00:51 AM
Quote from: Alan K. on May 29, 2024, 02:55:12 AM
Did you weld in the set screw?

No Weld, just Locktite and a snug Fit. That SetScrew is not going anywhere and is sufficiently handling the Load when using the Pliers for Light- to Medium-Duty Tasks. I would never trust a Grappler anyway with Heavy-Duty gripping ..

Offline Trilby

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Re: Repaired Grappler
Reply #9 on: May 29, 2024, 12:37:36 PM
To compare the Changes ..
Here is Gen2 of the Grappler with the Part for the AdjustmentScrew vastly improved. They shortened the Screw and used the free Space to beef up the Part properly.
Pic taken from latest available Grappler Pagehttps://web.archive.org/web/20111020195924/http://www.gerbergear.com/Industrial/Tools/grappler_31-000333 Page

* GrapplerV2CUT.jpg (Filesize: 61.4 KB)

us Offline IMR4198

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Re: Repaired Grappler
Reply #10 on: May 29, 2024, 12:45:00 PM
   Now I know what to look for if I ever run across an old Grappler.  Nice photos all around.  Best wishes.  G
 :hatsoff:
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Offline Trilby

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Re: Repaired Grappler
Reply #11 on: June 05, 2024, 11:07:28 PM
This is the shoddy Part modeled in 3D, ready to be printed/sintered. Note that this mixes Gen1/2 and requires shortening the AdjustmentScrew quite a Bit (just like in Gen2). Forum does not allow arcane Attachments .. so rename *.stl.doc to *.stl. Sizes in mm. Make sure to look around for resonable Offers. Here in Germany i can get this in Titanium for 100$

* GrapplerAdjuster20.jpg (Filesize: 13.69 KB)
* GrapplerAdjust20.stl.doc (Filesize: 89.93 KB)
« Last Edit: June 05, 2024, 11:15:38 PM by Trilby »

us Offline Barry Rowland

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Re: Repaired Grappler
Reply #12 on: June 06, 2024, 01:32:38 AM
I forgot about the Grappler!  The used ones are mighty salty on the used market :facepalm:
Barry
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Offline Trilby

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Re: Repaired Grappler
Reply #13 on: June 07, 2024, 03:37:10 PM
Some minor but important Refinements to the 3D-File. Again, rename *.stl.doc to *.stl 
* GrapplerAdjust21.stl.doc (Filesize: 90.9 KB)

us Offline IMR4198

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Re: Repaired Grappler
Reply #14 on: June 09, 2024, 11:34:25 PM
Trilby, I think you are the Grappler expert.  I didn't realize the prices of these things on the secondhand market until Barry mentioned it.  Wowsers.  Best wishes.  G
 :)
Merit Badges Start a new thread with photos of your slasher/chopper/machete knives in use Start a new thread showing photos of your outdoor cooking Start a thread with a photo of a repair you made with duct tape Must start a thread with a photo of your EDC watch Start a new thread and post a photo of the multitool for fifteen (15) consecutive days. Must start new thread with photos of multitools (Magazine/Catalogue type photos) Start a new thread and post a photo of the multitool for seven (7) consecutive days. Participate in a challenge by carrying  a 100mm or 108mm SAK and post a photo of it  for thirty (30) consecutive days. Start a new thread with a photo of custom or non standard SAK scales in your collection Start a new thread with photos of your chainsaws Start a new thread with photos of your hobo knives in use Start a new thread with a photo showing the Swiss Army Knife   Toothpick being used in an unusual way. Post your pocket dump photos then challenge two more members who must post their pocket dump photos within 24hrs for you to get the badge. Participate  in Challenge thread and post a photo of a Classic SAK for thirty (30) consecutive days. Participate  in Challenge thread and post a photo of a MiniChamp SAK for thirty (30) consecutive days. Participate in a Challenge thread and post a photo of a tool made in a specific country for thirty (30) consecutive days.

Offline Trilby

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Re: Repaired Grappler
Reply #15 on: June 10, 2024, 02:32:38 PM
Again some minor Refinements ..
Rename *stl.doc to *.stl
* GrapplerAdjust22.stl.doc (Filesize: 109.07 KB)

Offline Trilby

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Re: Repaired Grappler
Reply #16 on: June 11, 2024, 12:15:34 PM
Optional v24 with added 2.5mm Hole for a M3x3mm SetScrew to retain the PivotAxle (needs to get threaded) ( M3x4mm will also work)

You can preview these in 3D at https://www.thingiverse.com/thing:6652755

If You do not need this extra SetScrew, use v22 above

Rename *.stl.doc to *stl

* grappler24.stl.doc (Filesize: 173.03 KB)

Offline Trilby

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Re: Repaired Grappler
Reply #17 on: June 12, 2024, 01:42:51 PM
V25 w. smoothed AxleBore from 32 to 320 Faces.
V26 likewise plus the extra 2.5mm Bore for optional RetentionScrew  (Thread for M3. M3x3 or M3x4 will fit)
Preview in 3D on https://www.thingiverse.com/thing:6652755
Rename *.stl.doc to *.stl
* grappler25.stl.doc (Filesize: 165.71 KB)
* grappler26.stl.doc (Filesize: 194.91 KB)

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