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Instruction/Data Sheet

Page 8

Now the line marked ‘2’ will be in line with the reference mark on the chuck body.

Now move the toorest to the “safe toolrest position” at the face of the wood.

Turn the second small dish outlined by the small circle with the centre marked ‘2’.

* Remembering to only go as deep as the previous dish *

Switch off the lathe. Check the tool finish, sand and finish the dish by hand.

Move the toolrest back to the “safe toolrest position”  at the outside of the blank.

Now turn the second arc. Regulary switch off the lathe and check as before.

Once the outside is turned down to the mark, switch off the lathe and check there is a clean finish  
from the tool. Then sand and finish this side by hand.

Loosen the boss screws and remove the eccentric boss.

Undo and remove the machine screw & washer and carefully remove the faceplate from the  
bi-hexagonal locating socket and turn it through 120 degrees.

Replace it back into the socket and re-tighten the machine screw and washer.

Replace the eccentric boss back into the main body and set to position ‘35’ in the sight window  
and re-tighten the boss screws.

Now the line marked ‘3’ will be in line with the reference mark on the chuck body.

Next move the toolrest to the “safe toolrest position” at the face of the wood.

Turn the third small dish outlined by the small circle with the centre marked ‘3’.

* Remembering to only go as deep as the previous 2 dishes *

Switch off the lathe. Check, sand and finish as before.

Move the toolrest back to the “safe toolrest position” at the outside of the blank.

Now turn the third arc. Regularly switch off the lathe and check as before.

Robert Sorby  

Instruction/Data Sheet

ECCENTRIC CHUCK PROJECTS

Summary of Contents for Eccentric Chuck

Page 1: ...rotatation of the lathe Any number other than zero will then offset the work piece by the amount shown in the viewing window The combination of the amount of offset of the eccentric boss the position in the bi hexagonal socket means this is the most versatile Eccentric Chuck available The Robert Sorby Eccentric Chuck weighs around 51 2 lbs 2 5kgs It is designed this way to counterbalance the weigh...

Page 2: ...ithout any inteference Check this by rotating the wood or work piece by hand before switching the lathe on Safety equipment As with all woodworking sufficient safety equipment should be worn A very minimum of a pair of safety glasses and a dust mask is essential but when turning off centre a face shield is highly recommended Please read the step by step instructions very carefully attempting any o...

Page 3: ...tre we will reduce the speed of the lathe for safety It can be increased with confidence and experience Switch the lathe on and watch the wood spin to understand what the wood is doing now it is rotating off centre Care must be taken when turning off centre work Approach the wood very carefully and allow for the fact that you will only touch the wood in one place on every rotation Place the cove c...

Page 4: ...t off it isn to the right hand side of the original safety mark Be careful when parting off that the goblet does not come loose Only part all the way through if you have experience and confidence to do so if not part a small way through and finish with a saw Check and finish the base and proudly display your Off set Stem Goblet Robert Sorby Instruction Data Sheet ECCENTRIC CHUCK PROJECTS ...

Page 5: ...ce of the blank in the safe toolrest position Turn the face of the blank flat Place the toolrest at the safe toolrest position at the outside of the blank Turn the face with a small bowl shape curve on the blank Now loosen the boss screws and remove the eccentric boss Undo and remove the machine screw and washer and remove the faceplate from eccentric boss Unscrew the wood screws and remove the bl...

Page 6: ...d re tighten the machine screw and washer Replace the eccentric boss back into the main body Set to position 35 in the sight window and re tighten the boss screws Now the line marking 2 will be in line with the reference mark on the chuck body Move the toolrest to the safe toolrest position at the face of the blank Switch on the lathe and mark a new centre No 2 Switch off the lathe and loosen the ...

Page 7: ...and Move the safe toolrest position at the outside of the wood Ensure the lathe is still set to a very low speed Switch on the lathe and watch the wood for a short while before starting to turn Once again care must be taken when turning off centre Approach the wood very carefully and allow for the fact that you will only touch a third of the wood on each rotation Take very small cuts with a 3 8 10...

Page 8: ...move the eccentric boss Undo and remove the machine screw washer and carefully remove the faceplate from the bi hexagonal locating socket and turn it through 120 degrees Replace it back into the socket and re tighten the machine screw and washer Replace the eccentric boss back into the main body and set to position 35 in the sight window and re tighten the boss screws Now the line marked 3 will be...

Page 9: ...en the screws Switch the lathe back on and turn the centre dish Then sand and finish as required Loosen the boss screws and remove the eccentric boss Undo the machine screw and washer and remove the faceplate from the eccentric boss Undo the woodscrews from the faceplate remove the bowl sand and finish the base We now have a 3 sided bowl with a cloverleaf design in the centre Robert Sorby Instruct...

Page 10: ...a standard 60 degree revolving live centre wind in the tailstock and lock to hold the wood in place Cabriole Candlestick Place the tool rest in the safe toolrest position Set the speed of the lathe appropriate for the size of wood and the capabilities of the lathe Switch the lathe on and turn the wood down to the round ensuring that only the minimum is removed Now place the tool rest to the safe t...

Page 11: ... turn a large V shape Switch off the lathe and check for a clean cut Now switch lathe back on and move along to the third mark and turn a large V shape Switch off the lathe and sand by hand to finish Holding the wood with one hand push back the tailstock so that it is clear Now very carefully remove the hexagonal stem from the socket and turn through 180 degrees Replace back into the socket at tha...

Page 12: ... a well as a parting cut and allow for the holding screws when parting the candlestick from the waste wood Do not part all the way through allow a small nib in the middle that can be removed with a fine saw Switch off the lathe and remove the candlestick from the waste then sand and finish as required Finish the piece with a suitable finish and proudly display your Carbriole Candlestick Robert Sor...

Page 13: ...e screw and washer Place the eccentric boss into the main body so that 0 is visible in the sight window Now tighten the boss screws and put tool rest in safe tool res position Adjust the lathe speed as appopriate and switch the lathe on Using the 3 8 bowl gouge turn the bowl blank down to the round Switch off the lathe and check for smooth finish Sand and finish Now place tool rest in safe tool re...

Page 14: ... used to mark the position of the groove It can be turned using the 3 8 fingenail gouge Switch off the lathe sand and finish Loosen the eccentric boss screws and remove the boss from the main body Undo the machine screw and washer and once very carefully index the hexagonal stem 1 position and replace into the hexagonal socket Re tighten the machine screw and washer and replace the boss back into ...

Page 15: ...ove the lid wCheck and sand Place the tool rest at the safe tool rest position Switch on the lathe and hollow out the inside of the box allowing rooms at the bottom for the holding screws and parting off The outer limit of the hollow will be the guide left from the inner lip when parted off Switch off lathe and offer the lid up to check for a good fit When the box has been hollowed sand and apply ...

Page 16: ...Instruction Data Sheet Page 16 NOTES Robert Sorby Instruction Data Sheet ECCENTRIC CHUCK PROJECTS ...

Page 17: ... the most versatile tools available The Multi Tip Hollowing Tool is fitted with a 3 4 19mm wide half round shank which makes it he most user friendly hollowing tool on the market It is supplied with three cutters One for under shoulder hollowing and one for straight box cutting The other cutter is tear drop shaped and is used for shear scraping The Robert Sorby thread cutting tools are available i...

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