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| <div class="buyers-guide">
| | {{Dot Punch Buyers Guide}} |
| =====DT Online Buyers' Guide=====
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| </div>
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| The lowest cost option is to use a hand-held punch with a hammer but a wide range of automatic punches are available - both [https://en.wikipedia.org/wiki/Punch_(tool)#Prick_punch '''Dot Punches'''] and [https://en.wikipedia.org/wiki/Punch_(tool)#Centre '''Centre Punches'''].
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| * In general, '''Dot Punches''' have a sharper point ''(i.e. 60° instead of 90°)'' and need only the lower ranges of impact force ''(e.g. 20N to 50N)''.
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| * Automatic punches are simply pushed down against the work-piece and do not need to be struck - indeed, should '''NOT''' be struck with a hammer.
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| {| | |
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| | <dtamazon product="B00BDKZ70O" type="image">Centre Punch / Dot Marking Set 3pcs</dtamazon>
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| | <dtamazon product="B00I42D0WQ" type="image">Automatic Centre Punch / Dot Punch / Drills / Adjustable Spring Pressure TE573</dtamazon>
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| | <dtamazon product="B00GB11X3K" type="image">Automatic centre punch / dot punch / drills / adjustable spring pressure AT632</dtamazon>
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| | <dtamazon product="B0001K9PB4" type="image">Draper 13612 Automatic Centre Punch</dtamazon>
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| | <dtamazon product="B0043YHBEW" type="image">Eclipse Centre Punch, Automatic 65-171R</dtamazon>
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| | <dtamazon product="B001MRQKH2" type="image">Rennsteig 20-50N 430 129 Automatic Centre Punch</dtamazon>
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| | <dtamazon product="B0006J4Q64" type="image">Starrett 18A Automatic Centre Punch with Adjustable Stroke</dtamazon>
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| |-
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| | <dtamazon product="B00BDKZ70O" type="text">Centre Punch / Dot Marking Set 3pcs</dtamazon>
| |
| | <dtamazon product="B00I42D0WQ" type="text">Automatic Centre Punch / Dot Punch / Drills / Adjustable Spring Pressure TE573</dtamazon>
| |
| | <dtamazon product="B00GB11X3K" type="text">Automatic centre punch / dot punch / drills / adjustable spring pressure AT632</dtamazon>
| |
| | <dtamazon product="B0001K9PB4" type="text">Draper 13612 Automatic Centre Punch</dtamazon>
| |
| | <dtamazon product="B0043YHBEW" type="text">Eclipse Centre Punch, Automatic 65-171R</dtamazon>
| |
| | <dtamazon product="B001MRQKH2" type="text">Rennsteig 20-50N 430 129 Automatic Centre Punch</dtamazon>
| |
| | <dtamazon product="B0006J4Q64" type="text">Starrett 18A Automatic Centre Punch with Adjustable Stroke</dtamazon>
| |
| |}
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|
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| [[Category:Punches]] | | [[Category:Punches]] |
Revision as of 12:30, 15 May 2016
Description
Dot Punches are similar to Centre Punches but have a sharper point by being ground to an angle of 60 degrees (in a similar manner to a Scriber).
Features and Uses
Dot Punches are held at an angle to the intersection or line to be marked and either lightly struck once with a hammer. Alternatively, Automatic Dot Punches are available, as shown, which are simply pushed down to activate.
Note:
If Dot Punches are used to mark where a large hole crosses each of its centre lines, for instance, accurate work would result in each ‘dot’ being halved across its diameter.
The lowest cost option is to use a hand-held punch with a hammer but a wide range of automatic punches are available - both Dot Punches and Centre Punches.
- In general, Dot Punches have a sharper point (i.e. 60° instead of 90°) and need only the lower ranges of impact force (e.g. 20N to 50N).
- Automatic punches are simply pushed down against the work-piece and do not need to be struck - indeed, should NOT be struck with a hammer.
