This month our lucky winner of £30 in Chester gift vouchers Keith Beaumont who has an interesting way of holding screws for modification.If you have a requirement to modify small sized threaded screws and you do not have one of the clever tools for that purpose mentioned in previous MEW articles, a simple method of holding the screw is to use a split die of the same thread. Put the screw into the die and then put the die into the self-centring chuck, making sure you have the split between any two jaws. Tighten the chuck and the screw is then locked enabling it to be machined. Either end of the screw can be machined in this way, as there is plenty of clearance behind the die. To ensure the die is clamped parallel with the SC chuck I nip the screw in the tailstock drill chuck and bring it forward to the SC chuck before tightening.
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