Posted 03 November 2010 - 08:28 AM
My 'gun' is almost exactly like the one rd540 showed. I used it on an old carb during my Hodaka 250SL resurrection. Did a nice-enough job.
For carbs, it doesn't really do anything on the varnish, but it DID leave a nice finish. Not as rough as beadblasting nor sandblasting. And it washes off with water! That's a real plus for on-bike work without major disassembly.
Posted 03 November 2010 - 02:20 PM
Dood...details on that gun! You ran the pickup tube into the gun itself? Looks nice and compact!
Bought that gun at Tractor supply about a month ago. It is called the Cyclone becuase the holes in the nozzle are supposed to create more pressure. I just taped one hole with masking tape and ziptied a piece of fuel line to the handle of the gun and stuck it in the other hole. After blasting, I just cut the zip tie and pulled the hose and tape off the gun then toss it in the tool box.
KDN post a pic of the Hodaka
Posted 04 November 2010 - 04:32 AM
The media blaster is only $13 more.
Posted 04 November 2010 - 06:08 AM
I was looking around on HF and saw this- http://www.harborfre...-gun-47016.html
I thought it looked like it may do good for soda blasting, has anyone tried this or think it will work?
That definately won't do it.
You need to build something like what RD540 made or the one I built which is similar to this:
Posted 04 November 2010 - 06:28 PM
Posted 05 November 2010 - 03:34 AM
Just make sure you get soda and not powder. Baking powder is 1/2 baking soda and modifying agents like cream of tartar.
Posted 05 November 2010 - 04:54 AM
Posted 05 November 2010 - 06:24 AM
Gonna give it a shot over the weekend instead of holding out till I get around to buying the $27 media blaster.
Next I need to find my dust masks.
Posted 05 November 2010 - 06:56 AM
Posted 05 November 2010 - 07:08 AM
Posted 05 November 2010 - 11:14 AM
Here's my blaster. I hold the gun in one hand and the box in the other shaking it around if there's lumps.
Posted 09 November 2010 - 02:32 PM
Bleach what? There's powder residue on the the blaster, the engine is just clean.
borax is a bleaching agent. and I have two clean motors sitting in my garage and they don't look like that...
looks like severly oxidized aluminum like when you get muratic acid (used to clean chrome) on billet aluminum wheels. it turns white like that. happened all the time at the detail shop I worked at. then I'd have to break out all my cotton aluminum polishing buffs, wet sand paper, etc.
I'm guessing that you're saying it's the exposure of the pictures that's making it look that way..?
Posted 09 November 2010 - 06:06 PM
Posted 10 December 2010 - 01:58 PM
Posted 11 December 2010 - 12:34 PM
I didn't know I was going to get all obsessive with my rebuild so the motor just got a quick repaint after rebuild.
Now it looks cruddy in comparison, but I don't want to mess gaskets up.
Posted 13 January 2011 - 06:11 AM
Gave mine a test run.
Caliper off an 89 kx, soda doesnt get into the deep oxidizing, might need to add some fine glass media to remove it. Looks 10x better then before.
I did the front caliper to my 94 KX yesterday. I had some black spots too. What I did was first clean the caliper chemically (simple green, mineral spirits, brake clean) only using a nylon brush except for bad areas. That's when you can wourk out those spots. The wire brush I use is the size of a toothbrush, you can get them at Lowes or a welding supply shop. After you have it cleaned you can soda blast. That will give it a clean but dull look. So I found that going over the part lightly with another clean wire brush gives it a little shine and deepens the color a bit. Go real light like your just buffing the finish.
This side was where alot of the oxidation was. There's still maybe 5% residual left, but it's alot better than what it was.