Waterpik Flosser Leakage Repair

A common complaint about the Waterpik Ultra Water Flosser is the leakage at the bottom of the handle where it connects with the flexible tubing, typically after warranty expiration. Look at the list of 1-star reviews of the product on Amazon, and you will see what I mean.

Fortunately, if you own some kind of gutter silicone sealant (I always have a tube of Selley's 1-hour Roof and Gutter Speed Seal Silicone lying around the house for small patch jobs), this is easy to fix.. Simply empty the water tank and make sure everything is dry, then mold a generous dab of sealant around the joint area. Then wait a few hours for the sealant to cure, and you are good to go.

In fact, I reckon anyone who owns this product should reinforce the joint with the sealant right from the get-go. Yeah, I wish they had adopted a more durable design in the first place, but having a few kids tugging at the thing every morning and evening, I am surprised it lasted that long (over a year).

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Update: Line adapter for Ozito Blade Trimmer

Update (Dec 2021): If you access to a 3D printer, I would now recommend this solution , which makes it super easy to replace the trimmer line. I have been using it for a few months now with zero issue.

Line adapter for Ozito Blade Trimmer

This is an adapter for Ozito 18V battery trimmer (and possibly some Bosch trimmers as well) that uses a plastic blade for cutting. It lets you insert a 2.4mm trimmer line (about 8cm long) and use that for cutting. Simply cut a length of trimmer line and briefly heat up one end with a lighter so that a little bulb is formed. Then insert the trimmer line into the adapter and slot that into the trimmer as per normal. Make sure the trimmer line is not so long that it touches the safety guard. If that is the case, simply trim off any excess with a cutter or scissors. This part is best printed using PETG, which is a tougher and more flexible material. PLA is more rigid and breaks more easily. However, even with PETG, it will still break when it hits something really hard. Since this takes only 0.5m of material and 15 minutes to print, I will usually print a batch of nine at a time at very little cost. The blades that they sell do not break when it hits a hard object, but ...

3D Printer Filament Joiner

I have been looking at various ways of joining 3D printing filaments. One method involves running one end of a filament through a short PTFE tubing, melting it with a lighter or candle, retracting it back into the tubing and immediately plunging the filament to be fused into the tubing: One problem with this method is that you can't really control the temperature at which you melt the filament, so you frequently end up with a brittle joint that breaks upon the slightest bend. Aliexpress even sells a contraption that works along the same line. As it uses a lighter or candle as well, it suffers from the same weakness. I am not even sure why you need a special contraption when a short PTFE tubing will work just as well. Another method involves using shrink tubing/aluminium foil, and a heat gun: But a heat gun is rather expensive, so I wanted to explore other alternatives. The candle + PTFE tubing method actually works quite well when you happen to melt it at the rig...

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