New er32 sliding tap holder
- Thread starter RobS
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Aurelius
Member
Sorry for my ignorance, but what makes the ER32 better than a standard jaw-type tap holder?
RobS
Member
This is a sliding holder which allows the tap to be fed into your part as your part turns.
The er32 allows for holding your tap. It's much more accurate than the Other tap holder I have.
Here is a video of a similar holder in action
The er32 allows for holding your tap. It's much more accurate than the Other tap holder I have.
Here is a video of a similar holder in action
Aurelius
Member
Rob, Thanks!
I have the model in the video and it uses a two-jaw chuck with v-grooves to hold the square end of the tap.
My question was about the advantages of sing ER32 over something like that. Is it just more accurate or is there mopre to it than that?
I have the model in the video and it uses a two-jaw chuck with v-grooves to hold the square end of the tap.
My question was about the advantages of sing ER32 over something like that. Is it just more accurate or is there mopre to it than that?
RobS
Member
RobS
Member
Tolerance stack up of the v holders vs concentric lock up of an er32.
When I spin the Niels you see the tap is off axis. When I spin the er32 it's on axis.
Sorry I can never get videos to work so I included stills.
You can see in the Niels it's tilted to the right.
When I spin the Niels you see the tap is off axis. When I spin the er32 it's on axis.
Sorry I can never get videos to work so I included stills.
You can see in the Niels it's tilted to the right.
Attachments
RobS
Member
Make sure you get the tap close, lock the tailstock, slide it in till it engages, hand turn headstock to engage, then lower tap.
When reversing add slight pressure backward so that when the tap clears it moves away and leaves the starting thread intact.
1 photo shows how to align the handles to loosen (1st photo) the er32
Last photo shows how to tighten.
When reversing add slight pressure backward so that when the tap clears it moves away and leaves the starting thread intact.
1 photo shows how to align the handles to loosen (1st photo) the er32
Last photo shows how to tighten.
Attachments
Jarod888
Member
There are special collets for holding taps. They are expensive and hard to find. However, they have the "square" inside so that the tap won't sound in the collet.
I have had the exact same problem with my Niels niche tools tap holder and cannot seem to tap straight, which leads to lots of extra work and sections and caps that are always slightly off, been a huge frustration. Thanks for the lead!
RobS
Member
It is so worth it. I've been making kitless since 2016 and this has been a game changer. I now only use the Niels for taping bottle stoppers.
guitarchitect
Member
I have the same issue with basically all tap holders. what i've found is that a conventional tap wrench/holder, with a spring-loaded tap follower, makes for very concentric tapping. The pilot hole will guide the tap (as long as it's not a bottoming tap) and the spring-loaded follower pushes it through. I do all of my body tapping under power now and it's perfect. for tapping sections i just rotate the spindle and the tap gets pushed in. for tapping caps i just chuck the tap in my drill chuck
that being said @RobS how does it work for taps that aren't cylindrical? my 10x1 tap has a square end but the body of it has a curve - so i'd be wary of loading my tap in a collet as it will only grip the widest part. Maybe i just need a new tap, haha!
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RobS
Member
All my taps have cylindrical bodies that have machined square flats. I just hold them by the larger cylinder using the ER32 HOLDER.