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Powermatic 3520A - page 1
20" WOO DTURNI NG LA THE Model 3520A Instr uction Manual & Par ts Lis t M-0460221 (800) 248- 0144 www. p owe r m a t i c . c o m ...
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Powermatic 3520A - page 2
2 This manual has been prepar ed for the owner and operator s of a Powerm atic M odel 3520A Lathe. I ts purpos e, aside from proper machi ne operati on, is to pr omote safety through the use of accepted corr ect operating and m a intenance proc edures. C ompl etely r ead the safety and maintenanc e inst ructi ons before oper ating or s erv ici ng t ...
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3 TA BLE OF CONTENTS Safety R ules ................................................................................................................... ...................... 4-5 Safety: D ecals ......................................................................................................................................... 6 Spe cif ication ...
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4 SA F ETY RUL ES As w i t h all m achi nes, ther e i s a cert ai n am ount of hazard i nv ol v ed with t he use of t his l at he. Use the m ac hi ne with the respect and cauti on dem anded where safet y precaut i ons are conc er ned. W hen norm al saf et y pr ec aut i ons are ov er l ooked or i gnored, per sonal i nj ury t o the oper at or can res ...
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Powermatic 3520A - page 5
5 Do not attempt to engage t he spi ndl e l ock pi n unti l the spindl e has stopped. I f leav i ng the m achi ne area, turn i t of f and wait unt il t he spi ndl e stops bef ore depart i ng. Give the wor k you a re doing y our undivide d att ention. Looking ar ound, carr y i ng on a conv ersati on and "horsepl ay " ar e carel ess act s t ...
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6 SAFE TY: D EC ALS Fa miliar ize you rs e lf wit h t he loc at ion and c ont ent of t hi s decal on your m achi ne. 6294773 ...
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7 SPECIF ICA TI ONS: 3520A Lathe Tabl e with standar d ex t ensions ..................................................................................................................... 28” x 38” Dist anc e B et w een Center s ....................................................................................................................... ...
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Powermatic 3520A - page 8
8 RECEIVING Rem ov e t he l at he f rom the shi ppi ng cont ai ner and check f or dam age. Report any dam age t o your dist r i butor i m m edi at el y . Accessori es are pack aged i n a separate car t on which w ill b e o n t he sh elf of th e m ac hine stand. Cl ean pr ot ecti v e coat i ng f rom t he bed, spi ndl es, work rest and f ace pl at e ...
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Powermatic 3520A - page 9
9 Tool Support The t ool support (show n in F i gure 5), i s designed to all ow adj ustm ent f or hei ght, posi ti on on the bed, and angle to the w ork. Your 3520A l athe com es st andard with t he 14" tool support. Ot her supports are av ai l able; consult the " Opti onal Equi pm ent" l i st on page 24. Peri odi cal ly t he tool re ...
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Powermatic 3520A - page 10
10 TOOLS If possibl e, sel ec t only quali t y , high speed steel turni ng t ool s. Hi gh speed t ool s hold an edge and l ast l onger t han ordi nary car bon steel . A s one becom es prof i c ient i n t urni ng, a v ar i et y of special ty t ools f or speci f i c appl i cat i ons can be acqui red. T he f ol l owing t ool s prov i de t he basi c s ...
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Powermatic 3520A - page 11
11 SPINDLE T URNING Spi ndle t urni ng takes pl ac e bet ween the center s of t he l athe. It requi res a s pur or dr i v e center i n t he headstoc k and a rev olv i ng or l i v e cent er i n t he tai l stock. A c up c ent er rat her t han a c one c ent er w ill r educe t he r i sk of spli tt i ng t he stock. Fi gure 2 show s the basic pr of il e ...
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Powermatic 3520A - page 12
12 4. Rotat e workpi ece by hand t o check f or proper c l earanc e. 5. Star t l athe at lowest speed and bring i t up t o the appr opr i ate RP M f or t he si z e of stoc k used (ref er t o tabl e on page 9). CUT T ING T ECHNI Q UES ROUG HI NG O UT : 1. Begi n w i t h a l ar ge r oughi ng gouge. P l ace t he t ool on t he tool support wit h the he ...
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Powermatic 3520A - page 13
13 2. Light l y m ar k t he center of the " V " wit h the t ip of the skew. 3. Mov e the poi nt of t he skew to t he ri ght hal f of t he desi r ed wi dt h of your c ut . 4. W it h the bev el paral lel t o t he ri ght side of t he cut, rai se the handle and push the t ool i n t o t he desired dept h, as show n i n F i gure 8. 5. Repeat f ...
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Powermatic 3520A - page 14
14 5. Make a bl ock t he same di am eter as the f ace pl at e, F igur e 9. Bot h gl ue bl ock and workpi ece should hav e good f l at surf aces f or gl ui ng. 6. Gl ue the bl ock t o the workpi ece. A v oi d using brown paper or news paper bet w een the bl ock and workpi ece. I t m ay w ork f ine i f y ou ar e usi ng scraper s, but a sli ght c at c ...
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Powermatic 3520A - page 15
15 5. Tur n workpi ece by hand t o ensure proper cl earance. 6. Star t l athe at lowest speed and bring i t up t o the m ax i m um saf e speed f or the siz e of work to be t ur ned ( see chart on page 9). I f the m ac hi ne start s to v i brat e, l ower the speed unti l v i brat i on stops. 7. Rough out t he out side of t he bow l wi t h the 1/ 2&q ...
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Powermatic 3520A - page 16
16 SANDING AND FINI SHING : 1. Rem ov e t he t ool r est and adj ust l athe speed to approx i m atel y 500 RP M . High speed can bui l d f r i ct i on whil e sanding and cause heat c hec k i n som e woods. 2. Begi n w i t h f i ne sandpaper ( 120 gr i t) and pr ogress through each gri t, using onl y l i ght pr essure. Coarser sandpaper tends to l e ...
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Powermatic 3520A - page 17
17 TROUBLE-SHOOTING (3520A Lathe) PROBLEM POSSIBLE CA USE SOL UTIO N Ex cessiv e v i brat i on. 1. Def ec t i v e spindl e beari ngs. 1. Repl ace beari ngs. 2. W orm or def ecti v e bel t . 2. Repl ace bel t. 3. Def ec t iv e m ot or . 3. Repl ace m otor . 4. W ork piec e warped, out -of - r ound, 4. Corr ect pr obl em by pl ani ng has maj or f l a ...
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Powermatic 3520A - page 18
18 PARTS LI ST: Headstock Assembly (3520A Lathe) No. Part No . Descrip ti o n Q uant ity 2277128 Headstock Assembl y ........................................................................................ 1 1 6294792 Headstock ........................................................................................................ 1 2 3719189 Mot o ...
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Powermatic 3520A - page 19
19 PARTS LI ST: Headstock Assembly (3520A Lathe) cont inued No. Part No . Descrip ti o n Q u a ntity 58 6821492 FW D/ REV S w i tch ............................................................................................. 1 59 6860800 Plai n Fl at W asher, #10 ..................................................................................... ...
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20 Headstock Assembly (3520A Lathe) ...
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21 PARTS LI ST: Stand & Bed Assembly (3520A Lathe) No. Part No . Descrip t i on Quantity 1 6295920 Bed ..................................................................................................................... 1 2 3423053 Lathe Leg ....................................................................................................... ...
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Powermatic 3520A - page 22
22 Stand & Bed Assembly (3520A Lathe) ...
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23 OPTI ONAL ACCESSORI ES: Indexer & B ed Extensions (3520A Lathe) No. Part No. Descri pti on Qu anti ty 6294729 Index i ng Assembl y (I t em s 1 thru 5) 1 3097006 Index i ng Coll ar .................................................................................................. 1 2 3406005 Adj usting S c r ew Knob ........................... ...
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Powermatic 3520A - page 24
24 OPTI ONAL ACCESSORI ES: Indexer & B ed Extensions (3520A Lathe) ...
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Powermatic 3520A - page 25
25 OPTI ONAL ACCESSORI ES: Tool Suppor ts (3520A Lathe) No. Part No . Descrip t i on 1 3585011 T ool S uppor t Pi n 5/8 X .495 X 3.50 2 6294745 B al l Beari ng Tai l stock Cent er (not shown) 4 6294730 12" Metal Spi nni ng T ool S uppor t Assembl y (I tem s 1 and 4) 6294731 26" Tool Support Assembl y (I t em s 6 thru 8) 7 6294795 T ool S ...
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Powermatic 3520A - page 26
26 OPTI ONAL ACCESSORY : Outboar d Turni ng Stand (3520A Lathe) No. Part No . Descrip t i on 6294732 Heav y Dut y O ut board Tur ning S t and (I t em s 1 thr u 9) 1 3042503 T urni ng Stand B ase 2 6295897 O f f set T ool Suppor t Pi n, 1.00 di a. 3 6295898 O f f set T ool Suppor t Casting 1. 00 hol e 4 2695026 S c r ew Lock A ssem bl y 7 3423055 T ...
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Powermatic 3520A - page 27
27 OPTI ONA L A CCESSORIES (3520A Lathe) No. Part No . Descrip t i on 1 6294736 3" Face P l at e, 1-1/4- 8 (ST D. ) 2 6294737 4" Face P l at e, 1-1/4- 8 (OP T .) 3 6294738 7" Face P l at e, 1-1/4- 8 (OP T .) 4 6294744 F ace Pl ate W r ench OPTI ONA L A CCESSORY Part No . Descrip t i on 6294733 Rem ot e ON/ OF F Swit ch OPTI ONA L A C ...
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Powermatic 3520A - page 28
28 ELECT RICA L SCHEMA TI C: 3520A Lathe ...
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Powermatic 3520A - page 29
29 ELECT RICA L : Rem ote ON/OFF Switch (Optional) NOT E : The l athe c an onl y oper at e when both the headstock and r em ot e swit c hes are i n the "O N" posi t i on. STEP 1: Disconnec t all el ectr i cal power to l athe. STEP 2: Rem ov e t he t wo s crews fr om t he c ont rol panel . Do NOT di sconnect c ont rol panel f rom wiri ng h ...
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Powermatic 3520A - page 30
30 ELECT RICA L SCHEMA TI C: 3520A Lathe with Remote S witch (Optional) ...
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Powermatic 3520A - page 31
31 ELECT RICA L SCHEMA TI C: 3520A School Lathe (#1352002) ...
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32 ELECT RICA L SCHEMA TI C: 3520A School Lathe - 2330009 Kit ...
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Powermatic 3520A - page 33
33 AC INVERTER READINGS: Lathe Speed Ch art ...
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Powermatic 3520A - page 34
34 Instructions for Mounting Indexing Assem bly (Optional A ccessory ) 1. Remov e the handwheel. Loosen the two set screw s and s l i de t he handwheel of f . 2. If y our l at he was purchased bef ore Januar y 1998, you m ust dr ill a 1 /4 " h o le in to th e headstock so that the i ndex er w ill w or k pr operl y. B ef ore the 1/ 4" hol ...
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Powermatic 3520A - page 35
35 To or der par t s or reach our serv i c e depar t m ent, pl ease cal l our t oll -f r ee num ber bet ween 8:00 a.m . and 4: 30 p.m . (CST ), M onday t hrough F r i day. Hav i ng the M odel Num ber and S er i al Num ber of your m achi ne av ail abl e when you ca ll w ill allo w us to s e rve yo u q uic kly and accurat el y . Locat i ng the stoc k ...
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Powermatic 3520A - page 36
36 03/03 W MH Tool G r oup 427 Sanf ord Rd. LaVergne, TN 37086 Phone:( 800) 248-0144 Fax : ( 800) 274- 6840 E-m ai l : pow erm at i c@ wmht ool group. c om W e b si t e : www. p owe r m a t i c . c o m Pow erm atic ALL RIGHTS RESERVED ...
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