This category contains sites of machine shops -- and there are relatively few of them -- that concentrate on what is perhaps the same idea: the drilling of centered holes through lengths of tubing, and usually long ones at that. Gundrilling, as its name suggests, originated as an operation in the manufacture of firearms, but it now applies to various other deep hole drilling applications. Boring -- in the case of this category at least -- applies to the creation of large diameter rings, invariably with quite thick walls. And trepanning is a process that produces thick walled tubes in such a way that the centre core is retained rather than being drilled away (as, in contrast, it is in gundrilling and boring operations). Note: Although some shops include one or more of the capabilities covered in this category, their sites need to be focused on them to be listed here. If the business emphasis lies elsewhere, the firm should be indexed in a correspondingly more appropriate category.

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American Machine & Gundrilling
Specializes in hole drilling solutions with hole diameters from .078 inch to 2.75 inch and lifting capacities from 2 oz. to 20,000 lbs.
Apperley Honing Ltd
Independent specialist contract honing company in the UK.
BC & F Tool Company
Specializes in small hole gundrilling.
Dearborn Inc.
Gundrilling company with range of capabilities serving variety of industries. Includes trepanning, honing, and pattern and concentric tube drilling. Examples of complex and unusually shaped end products.
Honematic Machine Corporation
A complete source for precision hollow components. Services include deep hole drilling, honing, OD/ID grinding and CNC turning and milling.
K. Simke Gundrilling
Canada. Specializes in gundrilling work, with particular emphasis on advantages of process for the moldmaking industry. Experience includes space, missile, machinery building, and oil drilling tool jobs.
Mollart Deep Hole Drilling Systems
Contract deep hole drilling services. Holes from 0.8mm to 300mm diameter and up to 4000mm deep. Deep hole drilling machines and tools for gundrilling, BTA and ejector technologies.
Nelson Precision Drilling
Precision deep hole drilling and honing services

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August 6, 2015 at 5:45:03 UTC
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