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Black and Decker Workmate replacement part gripper-updated 11-17-17

by MakerBeck, published

Black and Decker Workmate replacement part gripper-updated 11-17-17 by MakerBeck May 23, 2012
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ANSYS Spaceclaim Engineer

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Summary

I had destroyed a "Gripper" on my BD Workmate and decided to make a replacement. I ended up with two versions, one almost identical to the original and a second one with some reinforcements.

1-2-15 I loaded my repaired version as someone reported an issue.
Apr-4-17 Uploaded a double checked (repair) version with MM in the name. All models are saved in MM.

11-17-17 uploaded a redesigned version from Spaceclaim with smoother sides and some additional fillets. Latest file is BD Workmate Benchdog 11-17-17

Instructions

Print this with 50% fill, wall thickness of two, with a raft and support, I set my bed temp on my Replicator to 110 degrees. You should print it in a horizontal position. The first time I printed it, I positioned it vertical to ensure the top looked nice. The part came out great but with a single wall layer and 25% fill and the layers running horizontal, it was not strong enough when inserted into the workmate. One of the "forks" cracked between layers right where it started. I then changed the fill to 50% and set wall layers to 2 and printed it on its back (horizontal). This did the trick and the part inserts and removes fine and holds up under pressure. I also did a second design with a fillet fill on the inside of where the forks emerge from the cylinder to add extra strength. I am uploading the Sketchup files and STL along with photos of the OEM part and my part.

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There is nothing wrong with the scale. It is saved in MM, check your slicer. I just downloaded it to check since it was uploaded long ago and loaded it into NetFabb to check size and it came in correct. 34.99x36x51 mm. (1.38x1.42x 2.01 in.) LxWxH

Whats wrong with the scale settings on this I can hardly see it on my slicer?

Hi, thanks for your work ! I have tried to print it but I have a problem in Simplify 3D, there is a triangle hole in the model.

I loaded a repaired file in January 16 after you pointed out the problem. Just checked it again and loaded another with MM on the end of the name to make it clear that the file is saved in MM (someone else said it was coming in micro sized to their slicer.)

Four months later and these are holding up great on my Shop Mate work bench.

I printed five of these so far. Printing horizontally definitely works the best as far as strength because of the orientation of the layers prevents breaking of the flexible forks. I also minimizes the support material that is printed vs the upright orientation.

Both versions, with and without the additional bevelled fillet at the base of the forks perform equally well. I have not tried to break one in my workmate yet, but so far the work as well as the originals.

While you can buy replacements for about a 1.50, shipping adds a minimum of $7 to the part
cost unless you buy multiples. Since this design is done, you might as well just print these if you need them and if you have bright plastic colors, all the better.

Just for fun, I might scale one up and print it off to have around the shop. I wonder what Black and Decker would think if a 5 in
ch tall one showed up in the mail.

They would probably think that a race of Extraterrestial Giants based in China stole their design and is selling knockoffs. the only logical conclusion, what else?

Printing some of these right now. This was on my list of replacement parts to make an STL for and now I don't have to.

Thanks!

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