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Video - Solvent Welding an Acrylic Crack (Waterman Hundred Year Pen)


siamackz

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I've successfully addressed cracks in celluloid pens, but this was my first shot at an acrylic pen. The solvent was hard to find where I live, and so I had to settle for a product in the market that claimed to work on similar materials. I'm pretty happy with the results. It's definitely not one of those "I can't even tell where its cracked" restorations, but the crack looks quite stabilized and functional. 

I am not an expert and so I really do welcome any suggestions you have :) 

For whatever its worth, here is a video of how I did it - 

 

My Vintage Montblanc Website--> link

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Thanks so much for showing how those Tofflemire clamps work. I was too intimidated to buy and try one of those when I had to solvent weld a cracked cap, so I used a rubber band (looped around multiple times). It turned out okay, but if it comes up again I'm going to try it with one of these. 

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21 hours ago, Paul-in-SF said:

Thanks so much for showing how those Tofflemire clamps work. I was too intimidated to buy and try one of those when I had to solvent weld a cracked cap, so I used a rubber band (looped around multiple times). It turned out okay, but if it comes up again I'm going to try it with one of these. 

I’m so glad this was helpful, yes it’s easier than you might imagine 

My Vintage Montblanc Website--> link

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Sia, well done indeed! It's so satisfying to have that crack just disappear. Yours is definitely nearly gone, and not an easy surface, either. 

 

Tim

Tim

 timsvintagepens.com and @timsvintagepens

 

 

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30 minutes ago, tmenyc said:

Sia, well done indeed! It's so satisfying to have that crack just disappear. Yours is definitely nearly gone, and not an easy surface, either. 

 

Tim

Thanks Tim! I’m glad I finally found a solvent available here that can help me take care of acrylic cracks too

My Vintage Montblanc Website--> link

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When I have repaired celluloid cracks, I've used MEK or acetone. These weld the material - that is the material melts and re-hardens with the crack "gone."

Compare to CA or epoxy - an adhesive that bonds to the material.

 

So does what you used weld or just glue the crack?

 

What would weld the acrylic??

 

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37 minutes ago, markh said:

When I have repaired celluloid cracks, I've used MEK or acetone. These weld the material - that is the material melts and re-hardens with the crack "gone."

Compare to CA or epoxy - an adhesive that bonds to the material.

 

So does what you used weld or just glue the crack?

 

What would weld the acrylic??

 

.

 

 

Hi, what I did welds the crack. The notes in my video explain the chemical responsible for welding. It does the same thing as MEK/acetone does for celluloid 

My Vintage Montblanc Website--> link

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