Hello, In the process of repairing a Sony WM-D3, I found that the plastic slider had a broken tooth. I initially sourced a replacement part (I was lucky enough to find an original spart part on eBay, I believe one of the latest ones available)... but managed to break it as well when disassembling the walkman a second time to fix another issue TIP: to avoid ending up in the same place, make sure to follow Valentin's How to remove the plastic slider on SONY WM-DD walkmans - it's much, much safer and works perfectly well - thanks as usual Valentin Back to the issue - I was left with no choice : I had to repair the slider myself. In another post on the forum, I had already noticed a possible method mentioned by Mr.Swift (https://stereo2go.com/forums/threads/dd2-plastic-slider-controlling-tape-head-arm.7529/#post-56388): "sodacrete". You can find a ton of videos on YouTube describing the process, here's one of them: . I decided to give it a go - and I'm so happy with the results that I decided to share my experience, hopefully it will help others. Start off by preparing your ingredients: super glue on one side, baking soda on the other - a very small quantity of both will suffice Very gently dip the tip of the broken tooth in the super glue (to add just a tiny bit), then in the baking soda (idem), then remove the excess powder Repeat 3-4 times until you have enough material Carefully and patiently sand it down to shape - I've used a small nail file for rough shaping, a scalpel blade for finer adjustments, and then 1000 and 2000 grit sanding paper for finishing Put the slider in place, and check that it slides without any friction - you will need to adjust perfectly the 2 areas indicated by red arrows. Several attempts will be required until perfection, and it's where Valentin's how-to shows all its value Patience is key! Make sure to not be carried away and remove too much material. Once happy with the result, apply some camouflage (in my case permanent black marker pen), and it's like new The repair is as solid as the original part - and I can put it back and forth without any fear. Checked in operation already, works flawlessly. Time will tell, but I feel it will last years without any problem. Thanks again to Mr.Swift for mentioning this method!
