Gun Drill Holder For Tool Post
- Thread starter leon sly
- Start date
I have mine set up that way... it works real well.
I put a valve between the back of the driver and the air fitting so I can adjust the airflow.
Heres a tip on centering your gundrill. (quick and easy)
drill a shallow hole (3/4" or so deep) and bore it to the size of your gundrill.
Put the gundrill in the tool holder and push the end into the hole you just made.
Loosen the compound slide, then line the back end up with your tailstock. Tighten the compound, lock the cross slide, then let 'er rip.
I put a valve between the back of the driver and the air fitting so I can adjust the airflow.
Heres a tip on centering your gundrill. (quick and easy)
drill a shallow hole (3/4" or so deep) and bore it to the size of your gundrill.
Put the gundrill in the tool holder and push the end into the hole you just made.
Loosen the compound slide, then line the back end up with your tailstock. Tighten the compound, lock the cross slide, then let 'er rip.
leon sly said:
Yes, they make an Aloris type holder for that set up.
However, it is very hard (at least it is for me) to get the drill set up exactly on center and straight.
Thank you Sheldon for sharing your method of alignment ... I will give it a try.
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To align the gun drill why dont you take your work piece and bore a hole to you gun drill size and use the pilot hole as a reference to get the gun drill on center.
The pilot hole has to be there if not the drill will chatter.JBCustomCues said:
The drill has to start inside the wood.
JBCustomCues said:
That I could do but the rear end still needs to be in alignment with the front end. In other words the center line of the drill is dead on with the center line of the wood its drilling.
That is why Sheldon uses the tail stock ... to align the rear end and put the bit on the true center line.
I use the tailstock to align as one key point.
And also made a block bearing to fit my aligned center rest that I use for pin drilling operations. The bushing is 35 mm OD and fits the ball bearing in the center rest. Now we can use three points to align the drill bit and ensure support and boring accuracy. It is aligned with the center drilled and partially bored cue stock, the center rest guiding the long bit, and the tailstock used to align the back of the gundrill which is in an aloris type toolpost holder. I know it is all aligned right if I can move the bit smoothly through the center rest bushing and into the prebored hole in my wood that I wish to bore through . Maybe a bit overkill but cost almost nothing to set up if you already use the center rest method for pins and facing jobs.-------
And also made a block bearing to fit my aligned center rest that I use for pin drilling operations. The bushing is 35 mm OD and fits the ball bearing in the center rest. Now we can use three points to align the drill bit and ensure support and boring accuracy. It is aligned with the center drilled and partially bored cue stock, the center rest guiding the long bit, and the tailstock used to align the back of the gundrill which is in an aloris type toolpost holder. I know it is all aligned right if I can move the bit smoothly through the center rest bushing and into the prebored hole in my wood that I wish to bore through . Maybe a bit overkill but cost almost nothing to set up if you already use the center rest method for pins and facing jobs.-------