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Projekt WS02 - Simple Pillar Tool

 

Threading holes is a more common task than I first expected. As an aid I have converted a simple power drill stand to become a tapping tool and this is how it was made.

 

The downside of threading holes free-hand is that it may be difficult to get the tap perpendicular to the job and straight into the hole. Also it is too easy to break a smallish tap. It can be solved by using a small guide block but using a stand means that one gets the very sought after third hand for holding.

 

I started with a simple power drill stand I found at a sale to the sum of about 4€! A good price for a tool conversion. Similar stands appear now and then at good prices in the shops.

 

The stand is really quite steady and stable, but it has really not a very good finish. It can be greatly improved with  few adjustments and finishing.



            



In addition to the stand I also purchased an angle accessory for a power drill for around 12€. This one is also found in various shops and often at good prices. The chuck is good and was what I was looking for.

 

Around 15€ worth of purchased stuff and some bits from the scrap box. I did not think it was necessary to keep the drill function so I removed all parts for that.

 

Then I turned a suitable chunk to be placed in th stand in place of a power drill. This one was from brass as I happeneed to have a useful chunk. A few more bits was also made to suit.


 



The brass block fits in place of the drill and is locked using the same screw.

 

The knob in front of the block have two grip diameters, a larger for medium sized taps and a smaller one for the small taps. I also drilled and tapped two holes in the side of the larger grip diameter for a couple of "wings" as an aid when using larger taps. The drill chuck is threaded with a 3/8"x24 thread and is thus threaded onto the shaft and locked using a thread-lock resin. Below the chuck we see the two stubs that can be threaded into the grip wheel. 


The assenbly is done as follows. Start by securing the block to the stand.



Fit the finger grip to the shaft and fit the stub wings:



As can be seen, the wings just pass the support, but it works well and M6 (1/4") threads are easily done.

Time to fit the chuck.
 



It is normally enough to tighten the chuck well, but using some thread-lock resin makes sure it stays in place. The chuck in not so large4 it cannot pass through the hole in the support so it will be easy to dismantle the whole thing.


After som tough-up with filing and sanding I locked the feed function by replacing the guide pin with a suitable M10 bolt.  

 

 

 

The plastic cover is re-fitted and on its left side (not visible here) there is a clip for the chuck key.

This did not take long to do and the result became ever so useful and a veru good addition to the workshop.


I hope it provided some ideas.

 

 

 

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