7/28/12

Let's Beat The Heat

A neighbor was on his way of trashing his old ice cooler. Although it is quite small for the idea, I managed to cramped the fan and battery in the cooler. After stocking a couple of frozen water bottles in the cooler, it was an added relief on one hot summer.
And it really works!

 It is much easier to bore a hole using the Dremel tool.

 First test on the cooler with the fancy fan.

 Here comes the modified one with a more efficient fan. The fan specification: dc brushless, 12V, 0.30 Amp, model D12SH-12.

 A look on the battery arrangement.

 The oposite side of the fan, outgoing flow.

Now add that frozen bottles and you will be blowing that cool air.

6/16/12

Angle Grinder Stand

Here are some snap shots of my homemade angle grinder stand. This tool aid gives a lot of benefits on different applications in optimizing the use of angle grinder.

 Plate from scrap metal.

 Taken from the rear.





 Now we see how the angle grinder is inserted to the pipe.



 Putting to a test the homebuilt stand.

 Here is one model on the market.

...and here is another made.

5/5/12

Cut-Off Grinder Exposed

Lately, I've been having a problem with my grinder. It seems that that normal whining sound has been replaced by a low growling with a combination of of a crakling sound sound. I decided to open it and exposed the mechanism.
An old cut-off grinder salvage from flea market retrofitted with a different ac plug.
Other than the regular specs shown of 115v, 1.5 amps.

Inside mechanism exposed. Brushes are still in good shape.

This culprit with the dirty bearing as shown. Commutators seemed smooth and clean.

Most grinders have this so called straight shot wiring, single phase commutator motor. This small capacity series motor can also be operated on dc (direct current) or single phase alternating supply of same voltage with the same characteristics, called universal motors.

3/24/12

Press Brake

Once again, I used angle bars from bed frames


Added a car jack

I found some 1 1/2 steel bars from ukay ukay