Launch of Ebay store

Graphskill are pleased to announce the launch of their EBay store – just one more way to get our products at amazing prices. It will take a while to get all our product lines on, but we have made a start, so please drop in and have a look and let us know what you think http://stores.ebay.co.uk/Graphskill-Nuts-and-Bolts    

Real-TIME CONTROL OF POLARISATION IN HIGH-ASPECT-RATIO ULTRA-SHORT-PULSE LASER MICRO-MACHINING

Technical Report Mr Olivier Allegre from Liverpool University has kindly offered this short summary of a paper he submitted at this year’s ICALEO conference in Los Angeles. Many thanks to Olivier: Figure 1. (a) Exit hole resulting from helical drilling with linear polarisation. (b) Exit hole resulting from helical drilling with polarisation trepanning. Real-TIME CONTROL OF POLARISATION IN HIGH-ASPECT-RATIO  ULTRA-SHORT-PULSE LASER MICRO-MACHINING Paper (P150) O. J. Allegre1, W. Perrie1, K. Bauchert2, G. Dearden1, K. G. Read more…

The advantages of Thread Rolling

The advantages of Thread Rolling There are a number of ways of applying a thread to a bar, from the very traditional Tap  and Die, single point threading on a metal lathe, bar threading machines which using the chasing method, and in some applications, lasers At Graphskill we use Roll threading and here we will briefly look at why With Roll threading there is no cutting, milling or chips, it is a more accurate, easier Read more…

When should you use galvanized steel or zinc plated steel?

When should you use galvanized steel or zinc plated steel? Both add a layer of zinc to the outside of the product. Zinc plating looks shiny and pretty, galvanized looks dull. But don’t be a magpie and just pick up the shiny object – think about the use. Both methods add a protective layer of zinc to the steel.  Zinc protects the steel by sacrificing itself – called a “sacrificial anode”. When exposed to the Read more…

Nominal Bore for pipe support systems

First some common definitions of the two words in the title: Nominal: as expected or planned; normal Bore: diameter of a tube / pipe So, putting those together we would expect “Nominal Bore” to mean the expected diameter of a tube – but within the realms of pipe support systems it is often a cause for error. U-bolts, pipe clips, pipe clamps, hangers and of course our own modular pipe support system – the 1205 Read more…

%d bloggers like this: