Natural Brass
Lasonic TRC-931/920 Switch Gear replacement
Made by
Print With Shapeways
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$23.50
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Product Description
This is a pair of metal replacement gear for Lasonic TRC-920 and TRC-931 switches. If your switch knob just spins or isn't able to change selection modes, then it's possible the plastic gear inside the switch has split or crumbled. In order to replace this gear, you should be sufficiently capable of removing, desoldering the switch assembly and replacing the gear. We cannot help you with this and you assume any risk associated with this "fix." This gear will allow you to "upgrade" this gear from plastic to metal.
The hole in the model is exactly the same size as the shaft, so some minor adjustment may be necessary for a good fit if overprint. Unfortunately, there is some tolerance to this manufacturing process so overprinting is a possibility. If too tight, you will need to either file down the hole or reduce the size of the shaft until the replacement gear is able to slide onto it. Although the models are drawn accurately, the 3D printing process does have some tolerance variations which varies depending upon the type of material chosen, so please understand this. We have also included a 1.5mm hole in the gear so you can set it in place with a set-screw. To do this, you will need an M2 setscrew, an M2 tap, and a 1.6mm drill bit to ream out the hole. If you choose not to use a setscrew, you can glue the gear onto the shaft, but please understand this may make it difficult or impossible to remove the gear in the future.
This gear was successfully printed and tested in PA12 nylon material and it was a tight fit that required some minor adjustment in the interior hole sizing. We expect that this will be the same with this material as well.
We have connected the 2 gears with a rod. We are unsure if Shapeways will allow this. If they do not, you'll have to purchase the gears individually (which unfortunately costs more due to their minimum charge requirement). The individual gear is available separately in our store. You will need to separate the gears with a hacksaw or dremel and file down the connecting nubs prior to use. The default material is brass, but aluminum is also an option. Aluminum should work just as well since it is definitely an upgrade over plastic and has the extra benefit of being easier to work (file down) than brass.
The hole in the model is exactly the same size as the shaft, so some minor adjustment may be necessary for a good fit if overprint. Unfortunately, there is some tolerance to this manufacturing process so overprinting is a possibility. If too tight, you will need to either file down the hole or reduce the size of the shaft until the replacement gear is able to slide onto it. Although the models are drawn accurately, the 3D printing process does have some tolerance variations which varies depending upon the type of material chosen, so please understand this. We have also included a 1.5mm hole in the gear so you can set it in place with a set-screw. To do this, you will need an M2 setscrew, an M2 tap, and a 1.6mm drill bit to ream out the hole. If you choose not to use a setscrew, you can glue the gear onto the shaft, but please understand this may make it difficult or impossible to remove the gear in the future.
This gear was successfully printed and tested in PA12 nylon material and it was a tight fit that required some minor adjustment in the interior hole sizing. We expect that this will be the same with this material as well.
We have connected the 2 gears with a rod. We are unsure if Shapeways will allow this. If they do not, you'll have to purchase the gears individually (which unfortunately costs more due to their minimum charge requirement). The individual gear is available separately in our store. You will need to separate the gears with a hacksaw or dremel and file down the connecting nubs prior to use. The default material is brass, but aluminum is also an option. Aluminum should work just as well since it is definitely an upgrade over plastic and has the extra benefit of being easier to work (file down) than brass.
Details
What's in the box:
SwitchGear3_hole_2x
Dimensions:
Success Rate:
First To try.
What's this?
Rating:
Mature audiences only.
