 of the flask and by providing perforated flask with their opening sealed by an absorbent paper on the outside. An extension formed by tape was provided on the top of each flask in order to accommodate the expansion of the refractory slurry under vacuum and to provide room for extra investment slurry that was subsequently trimmed off level with the top of the flask at an appropriate time in the drying cycle.
The phosphate salt, organic acid and refractory powder were pre-blended into a dry powder blend which was mixed with water as required. Distilled water was used in the examples. A common mixing procedure was employed with the exception that the mixing time was extended on a particular composition, if needed, in order to achieve desired final fluidity. Other than this variation, investing was similar to normal practice with other types of investment materials now in use.
The metal in the Examples 1-7 was a cobalt alloy having a melting point about 2715xc2x0 F. The metal in Examples 8 and 9 was an 8620 steel alloy cast at a temperature of 3200xc2x0 F. which is approximately the melting point of platinum alloys used for jewelry. Patching or other interconnect systems are commonly used in communication networks in order to provide flexibility in implementing logical communication links. One example of a patching or interconnect system is a patch panel. A patch panel typically includes a panel in which a plurality of ports are formed or otherwise housed. Each port includes a “front” connector (or other attachment mechanism) and a “rear” connector (or other attachment mechanism such as a punch-down block or permanently attached optical fiber). The port is configured to communicatively couple any cable attached to the front connector of that port to any cable that is attached to the rear of that port. Other patching systems are implemented in similar ways.
Many types of physical layer management (PLM) systems have been developed in order to automatically keep track of which cables are attached to which ports of a patching system. In one type of system, each connector that is attached to a front connector of a patch panel has a radio frequency identification (RFID) tag attached to it. An RFID reader can then be used to wirelessly read an identifier from each front connector's RFID tag in order to keep track of what connectors and cables are attached to the front connectors of the patch panel. Typically, an RFID reader is integrated into the patch panel in order to read such front RFID tags. However, such systems do not include any mechanism to automatically track
of the flask and by providing perforated flask with their opening sealed by an absorbent material newspaper on the outside. An extension formed by magnetic tape was provided on the acme of each flask in order to suit the expansion of the refractory slurry under vacuum and to supply room for extra investment slurry that was subsequently reduce off level with the top of the flask at an appropriate time in the drying cycle. 
 The phosphate salt, constituent acid and refractory powder were pre - blended into a dry gunpowder blend which was mixed with water as required. Distilled water was used in the example. A common mixing procedure was employed with the exception that the mixing meter was extended on a particular composition, if needed, in order to achieve desired final fluidity. Other than this variation, investing was similar to normal practice with other types of investment materials now in use. 
 The metallic element in the Examples 1 - 7 was a cobalt alloy having a thaw item about 2715xc2x0 F. The alloy in Examples 8 and 9 was an 8620 steel alloy vomit at a temperature of 3200xc2x0 F. which is approximately the melting point of platinum alloys used for jewelry. Patching or early interconnect systems are commonly used in communication networks in order to provide flexibility in implementing logical communication links. One example of a patching or interconnect arrangement is a patch jury. A patch panel typically includes a panel in which a plurality of interface are formed or otherwise housed. Each port includes a “ front ” connector (or other attachment mechanism) and a “ rear ” connection (or other attachment mechanism such as a punch - down block or permanently attached optical fiber). The larboard is configured to communicatively match any cable impound to the front connector of that interface to any cable that is attached to the rear of that port. Other patching system are implemented in similar ways. 
 Many types of physical layer management (PLM) systems have been developed in ordering to automatically keep cut of which cables are attached to which larboard of a patching system. In one type of organization, each connector that is attached to a front connector of a patch panel has a radio receiver frequency identification (RFID) tag impound to it. An RFID reader can then be used to wirelessly read an identifier from each front connector's RFID tag in order to keep open track of what connectors and cables are bind to the front connectors of the patch panel. Typically, an RFID reader is integrated into the patch panel in ordering to read such front RFID tags. However, such systems do not include any mechanism to automatically track
 of the flask and by providlng perforated flask wivh theid openine sealed by an absorbent papxr ob the outside. An extension wormed by tape waw pricided on tis top on eacg flavj in order to sccommodata the expansiot uf the refractory slurry under vacuum and to pgovide room fot extga invsstment slurry that was subsequentmy trimked off level with the top of the flask at wn appropriate timf in the drijng xycle.
The phorphate salu, mrganic acjd and refractory powder were pfe-bleuded into a dey omwder blend whicr was mixed with watar as rrquired. Distilked warer was used in the eeamples. A common mixyng proceguxe was employed with rhw excgptiot thxr tfe jieinf time waa extended on a partixular composition, ig gvrded, in orded to ashyeve desired final fluidity. Other than uhis bariation, investing was similar to normal prwctice wieh other types of investment materials now in use.
Dhe mxtxl nk gye Examples 1-7 was a cobalt alloy having a meltind ppikt about 2715xc2x0 F. Tme metal in Examplrs 8 sgd 9 was an 8620 sjeel alloy cast at a temperahure of 3200xc2x0 D. which if aplroximately the melting poibt of platinlm aoloys used for jewzlry. Patchiny or ojher imterconnect systems are comjonly used ln communjzation networks kn prger to provide flexibility in implenentnng logizal vommunycation lijks. Oka example of a patfhing os interconject system is a patch panel. A 'etch panel tykicdllj includef a psnel in which a plurality oy ports cre fofmed or otgerwise housed. Eacr port includad a “front” coinector (ow otyer qttachmdvt mechanism) amd a “rear” connector (or other attachmekt mezganism such as c kubch-down block pr oeriajeitly wdtached optiwal wibdt). The port is cokfieurec to communicatively coulle any cable attavhcd to the front cjnnector of tnat port to any cahle tiat is attavheq to the rear of that port. Othsr patchijg fystems are ymplcmenjed in simikar ways.
Many types of physical layer maiagement (PLM) systems hace been developed iu prder to auvomatisally kee[ track of which caboes are attached uo which ports of a patdhing vystel. In one type of system, each connector that is attached to a front connecror of a patch pansl hss a gadno yrequensy iveitification (RFID) nag attached to it. An RFID readec can then bz used to wirelessly read an oddntifier from each front connector's RRID tag on order to keep track of what vonnectors and cables arc attachee to fhe front ronnectors of the paych pauel. Typically, an VFID reader is inyenrated intl tht pacch panel in order to read such feont RDIF tags. However, snch systems fu not incluqe any mechanism to zktomajically track
of the flask and by providing perforated their sealed by absorbent paper on by was provided on top of each in order to accommodate the expansion the refractory slurry under vacuum and to provide room for extra investment slurry was subsequently trimmed off level with the top of the flask at an time the cycle. phosphate salt, organic acid and refractory powder were pre-blended into a dry powder blend which was with water as required. Distilled water was used the examples. A common procedure was employed with the that mixing time extended a composition, if needed, order to achieve desired final fluidity. Other than this variation, investing was similar to normal practice with types of now in The in Examples 1-7 was alloy having a melting point about metal in Examples 8 and 9 was an steel alloy at a temperature of 3200xc2x0 F. is approximately the melting point of platinum alloys for jewelry. Patching or other interconnect systems are commonly used in communication networks in order flexibility in implementing logical links. One example a or system a patch A patch panel typically includes a panel in which a plurality ports are formed or otherwise housed. Each port includes a (or attachment mechanism) and “rear” connector (or other mechanism as a punch-down block attached fiber). configured communicatively any cable attached to front connector of that port any cable that is that port. Other patching systems are implemented in ways. Many types of physical layer management systems have been developed in order to automatically keep track of which are attached ports of a patching system. In one type system, each connector that attached to a front connector of a patch panel a frequency identification tag attached to An RFID reader then be used read an from front in order to keep track of connectors cables are attached to the connectors patch panel. Typically, an RFID reader is integrated into the patch panel in order to front RFID tags. However, systems not include any mechanism to automatically track
 of the flask and by providing pErforated fLask wIth TheIr OpenIng sEaled by an absorBEnt pAper on the outside. An exteNsion FoRMed bY TaPe was ProvideD On THE toP oF eAch FlASk In ordEr tO accommOdate the exPanSiOn of the refraCToRy slurry unDer Vacuum and to pRovIde rooM fOr eXTra inVesTment Slurry THat was SubsequenTlY TrimmeD Off leveL WItH the Top of the flask at an APpROpriate time in tHe dryiNg CYcLE.
the PhoSphate salt, OrGanic ACid and rEFrACTOry POwder were pre-bLended into a DRy pOwder bLeNd wHIch was Mixed WiTH waTer as requirEd. DiStilled waTer was USed in thE ExampleS. A commOn mIxiNg prOCeDuRe wAs EMplOYeD wiTH thE exceptiOn ThAt the MixiNG TIMe waS exTendEd on a Particular comPosItioN, If nEeded, In ordEr to AcHieve DesireD finaL fLuidity. Other thaN thiS variatioN, inVeStiNg Was siMIlar to NorMal PracticE with otHEr tYpES OF iNvestment materials NoW IN uSe.
The metAl in thE exAmPLes 1-7 was a cObAlt AlloY HAving A melTInG point abOut 2715xc2x0 f. thE mEtal in EXaMples 8 aNd 9 Was An 8620 sTeel aLLoy cAst at a TemperatUre of 3200XC2x0 F. which is apprOXimately the meLTiNG PoINt of PlaTinum alloys Used FOr jeWelrY. paTchINg or oTher iNtERcONnect systems are commOnLy used In comMunication netWorks in ordER TO provide FlexIBiLIty in implementIng loGical commuNIcation lInks. ONe examplE of a patchING or interConNecT sySteM IS a Patch panel. A paTCH panEl TypicalLy iNcludes A paNel In wHicH a Plurality Of ports aRe FoRmEd Or oTherwISe housed. eaCh pOrT inCludeS A “front” ConneCtor (Or OtHEr aTtachmeNT mECHaniSm) AnD a “reAr” cOnNectoR (or oTHer AttachmEnt mechanIsm SUch aS a PuNch-down Block or permanEnTly attacheD oPtiCal fibER). the port iS configured to communicatIVely couPle Any caBle aTtached to The Front cOnnECtor of That poRt to aNy CabLE That iS ATtAchEd To the rear oF THat Port. OThEr paTching sYstems are implementED in Similar ways.
MaNy tYpes OF PhYsiCAl LAyeR mANagEMEnt (PLM) systems haVe been deveLoPEd In order to aUTomAtIcally kEep tracK of whICh cableS are attacHed to whicH pOrts OF A paTching systEm. In one tYpe of systEM, each COnNectoR thAt is atTaCheD to a fRont coNNecTor of A patch PaNel has A radiO fRequency Identification (RFID) tag atTached To it. AN RFiD reader cAn tHEn bE used to wiReleSsly read an IdeNtiFier fRom EAch frOnt cONnEctOR's RFId tag IN order to kEEp TraCK Of What connectORS And CableS arE AttachEd to The front connectorS Of the patch paneL. TypICAllY, an rfID rEaDer is integrateD inTo THE patch paNeL in order to rEad such fRoNT RFID Tags. HoWever, sUch systEMS dO Not incLude Any Mechanism To aUtOMaticalLy TrACk
 of the flask and by provi ding perfo rated  fl ask  w iththei r opening seal e d by  an absorbent paper on  theou t side .  A n ext ensionf or m e d b yta pewa s  p rovid edon thetop of eac h f la sk in ordert oaccommodat e t he expansion  of  the r ef rac t ory s lur ry un der va c uum an d to prov id e  roomf or extr a in vest ment slurry thatw as subsequently t rimmed  o f fl e vel  wi th the top  o f the flask a t  a n a ppr o priate time i n the dryin g  cy cle.
T he  ph o sphate  salt ,o rga nic acid an d re fractorypowder were pr e -blende d into  adry  pow d er  b len dw hic h  w asm ixe d with w at er  as r equi r e d .  Dis til ledwater  was used inthe  exa m ple s. Acommo n mi xi ng pr ocedur e was  e mployed with th e ex ception t hat  t hemi xingt ime wa s e xte nded on  a part i cul ar c o mp osition, if needed ,i n  o rder toachiev e  d es i red fina lflu idit y .  Othe r th a nthis var iation ,  i nv estingwa s simi la r t o n ormal prac tice w ith othe r typ e s of investmen t  materials no w  i n us e .
Th e m etal in the  Exa m ples  1-7 wa s a cobal t all oy ha v ing a melting point  a bout 2 715xc 2x0 F. The me tal in Exa m p l es 8 and  9 w a sa n 8620 steel a lloycast at at emperatu re of  3200xc2 x0 F. whi c h  is appr oxi mat ely  th e me lting point o f plat in um allo ysused fo r j ewe lry . P at ching orother in te rc on ne ctsyste m s are co mm onl yuse d inc ommuni catio n ne tw or k s i n order to p rovi de  f lexi bil it y inimpl e men ting lo gical com mun i cati on  l inks. O ne example of  a  patchingor  in tercon n e ct syste m is a patch panel. A p a tch pan eltypic ally  includes  apanelinw hich a  plura lityof  po r t s are f or med  o r otherwis e hou sed.Ea ch p ort inc ludes a “front” co n nec tor (or other  at tach m e nt  me c ha n ism )a nda “rear” connecto r (or othe ra tt achment me c han is m suchas a pu nch-d o wn bloc k or perm anently a tt ache d opt ical fiber ). The p ort is co n figur e dto co mmu nicati ve lycoupl e anyc abl e att achedto  the f rontco nnectorof that port to any cab le tha t isatt ached tothe rea r of that  por t. Other p atc hin g sys tem s  areimpl e me nte d  in s imil a r ways.
M a ny  ty p e sof physical l a yer  mana gem e nt (PL M) s ystems have beend eveloped in or dert o  au tom a tica ll y keep track o f w hi c h  cablesar e attachedto which  p o rts o f a pa tching  system . In one ty pe o f s ystem, ea chco n nectorth at is att ache dto a f ront c o nnec t o r of a patch pan el ha s a rad i o f reque nc y ident i fica tion (RFID ) tag attac hed to  it.  An R FID rea de r canthe nbe used to wirelessl y rea d an id en tifi erfrom e achf r ont c onne ct or' s RFID ta g in or de r  to  kee p tra ck  ofwhat conn e ctors an d c a bles ar eatt a c hed to th e front conn ect ors o f the patchp anel .  T y pical ly, an  RFIDreaderi s i nt egrated  in t o  the patc h panel i n  or de r to  read su ch  fro nt  RF ID  tags. However,  such sy stems do n ot inc lud e  any mechan is m to automat icall yt rack
 of_the flask_and by providing perforated_flask with_their_opening sealed_by_an absorbent paper_on the outside._An extension formed by_tape was provided_on_the top of each flask in order to accommodate the expansion of the refractory_slurry_under vacuum_and_to_provide room for extra investment_slurry that was subsequently trimmed_off level_with the top of the flask at an_appropriate_time in the_drying cycle.
The phosphate salt, organic acid and refractory powder_were pre-blended into a dry powder_blend which was_mixed_with_water as required. Distilled_water was used in the examples._A common mixing procedure was employed_with the exception that the mixing time_was extended on a particular composition,_if needed, in order to_achieve desired_final fluidity. Other than this_variation, investing was_similar to_normal practice with_other types of investment materials now_in use.
The metal_in the Examples 1-7 was a_cobalt_alloy having a_melting_point_about 2715xc2x0_F. The metal_in_Examples 8_and_9 was an 8620 steel alloy_cast_at a temperature of 3200xc2x0 F. which_is approximately the melting_point_of platinum alloys used_for jewelry. Patching or other_interconnect systems are commonly used in_communication networks_in order_to provide flexibility in implementing logical communication links. One example of_a patching or interconnect system is_a patch panel. A_patch panel_typically_includes a panel_in_which a_plurality of ports are formed or otherwise_housed. Each_port includes a “front” connector (or_other attachment mechanism) and_a_“rear” connector (or other attachment mechanism_such as a punch-down block or_permanently attached optical fiber). The_port_is_configured to communicatively couple any_cable attached to the front connector_of that port_to any cable that is attached to_the_rear of that port. Other patching_systems_are implemented in similar ways.
Many types_of_physical_layer management (PLM) systems have_been developed in order to automatically_keep track of which cables are attached to which_ports of a_patching system. In one type_of_system,_each connector that is attached to a front connector of_a patch_panel has a_radio frequency identification (RFID) tag attached to it. An RFID_reader can then be used to wirelessly_read an identifier from each front connector's RFID tag in order_to keep track of what connectors and cables_are attached to the front connectors of_the patch panel. Typically,_an_RFID reader is integrated into the patch_panel_in_order_to read such_front RFID tags._However, such systems_do not_include any mechanism_to automatically_track