Mortiser: Difference between revisions
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[[File:Hollow Chisel Mortiser.png|150px|right]] | [[File:Hollow Chisel Mortiser.png|150px|right]] | ||
[[File:BenchMountedMortiser.png|250px|right]] | [[File:BenchMountedMortiser.png|250px|right]] | ||
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=====Description===== | |||
The [https://en.wikipedia.org/wiki/Mortiser '''Hollow Chisel Mortiser'''] was invented in 1874 by the twin brothers Robert and Ralph Greenlee, founders of the [http://www.greenlee.com/about-us/historypage.html Greenlee Company]. Both floor-mounted and bench-mouned models are available. | The [https://en.wikipedia.org/wiki/Mortiser '''Hollow Chisel Mortiser'''] was invented in 1874 by the twin brothers Robert and Ralph Greenlee, founders of the [http://www.greenlee.com/about-us/historypage.html Greenlee Company]. Both floor-mounted and bench-mouned models are available. | ||
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An alternative for heavier work is a [https://en.wikipedia.org/wiki/Mortiser#Chain_mortiser '''Chain Mortiser'''] but the mortise they cut can have rough edges where the chain exits the mortise so they are not suitable for fine furniture making. They are similar in operation to a [https://en.wikipedia.org/wiki/Chainsaw '''Chain Saw'''] and not recommended for use in schools. | An alternative for heavier work is a [https://en.wikipedia.org/wiki/Mortiser#Chain_mortiser '''Chain Mortiser'''] but the mortise they cut can have rough edges where the chain exits the mortise so they are not suitable for fine furniture making. They are similar in operation to a [https://en.wikipedia.org/wiki/Chainsaw '''Chain Saw'''] and not recommended for use in schools. | ||
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<span style="color: green">'''Note:''' | <span style="color: green">'''Note:''' | ||
Many '''[[Mortise and Tenon Joint|Mortise and Tenon]]''' joints in furniture production today are probably cut by a '''[[CNC Router]]'''. The evidence of this can be seen if the mortice has rounded ends. | Many '''[[Mortise and Tenon Joint|Mortise and Tenon]]''' joints in furniture production today are probably cut by a '''[[CNC Router]]'''. The evidence of this can be seen if the mortice has rounded ends.</span> | ||
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{{Drill Press Buyers Guide}} | |||
[[Category:Machine Tools]] | [[Category:Machine Tools]] | ||
[[Category:Bench Top Equipment]] | [[Category:Bench Top Equipment]] | ||
Revision as of 20:40, 11 August 2016
Description
The Hollow Chisel Mortiser was invented in 1874 by the twin brothers Robert and Ralph Greenlee, founders of the Greenlee Company. Both floor-mounted and bench-mouned models are available.
The square chisels used are sharpened square tubes inside which an Auger Bit revolves to remove the bulk of the waste as the chisel is pressed into the workpiece. Although this can be quite slow for production work, the hollow chisel is easy to change when different size mortises are needed making them ideal for small scale furniture production.
A Mortising Attachment can usually be fitted to a Drill Press and for occasional use by an individual, this avoids the cost of an additional machine. The cutting tool (i.e. the Auger Bit) is almost completely enclosed within the hollow chisel making them relatively safe to use.
An alternative for heavier work is a Chain Mortiser but the mortise they cut can have rough edges where the chain exits the mortise so they are not suitable for fine furniture making. They are similar in operation to a Chain Saw and not recommended for use in schools.
Note: Many Mortise and Tenon joints in furniture production today are probably cut by a CNC Router. The evidence of this can be seen if the mortice has rounded ends.
- Stands for Portable Power Drills are inexpensive and adequate if only light work mainly in wood and plastics is intended.
- For more general purpose home workshop use choose a bench drill.
- The floor-mounted drill shown is for more arduous use drilling larger diameters.
- A combined Milling/Drilling machine would be a popular choice for Model Engineers and in home workshops.
- Mortisers comprise an Auger Bit inside a hollow square chisel which squares off the hole as it is drilled (Mortising attachments for Drill Presses are also available)
- Mini-drills and PCB Drills are useful for modelling and for drilling holes in circuit boards to receive eletronics components.
