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Hello, Yes I'm interested, count me in. Margarita Lopez Martinez Dept. Geologia, CICESE Ensenada, Baja California, Mexico At 12:10 PM 11/29/2005 +0100, you wrote: >Hi to all > >My experience has been the same with Ken, and I am still waiting for parts >paid last june ! > >I wonder if all users of Heines's furnaces could put up a groupped order >(at Thermoshield for example) in order to try to have lower prices for >heating filaments and crucibles if we order "plenty" of them (I have no >idea how many "plenty" would mean)... > >How does that sound ? > >Nick > >At 14:18 16/11/2005 -0800, Martin S. Wong wrote: >>Hi all, >>Our experience at UC Santa Barbara has been the same with regards to Ken >>Heine, so we've looked for other resources. We recently had a coiled >>heater element that sagged and contacted the heat shield, melting part of >>it. A company called Thermosheild in Palo Alto, CA, was able to provide >>new furnace sheilding based on our measurements of the Heine furnace >>design. Although I'm not at Santa Barbara now, reports are that the new >>heat shielding was of superior design to the Heine version. Contact info >>for thermoshield is: >>Thermo Shield >>722 Orange Avenue >>Los Altos, CA 94022-3849 >>ph: 650-941-5230 >>fax: 650-941-2568 >>e-mail: [log in to unmask] >>Main contact: Bernard Scheiff, [log in to unmask] >>http://www.thermoshld.com/ >> >>Thermoshield also was able to provide moly tubing for fabrication of moly >>crucibles. The moly tubing was about $330 from thermoshield for >>appropriate length and gauge. We had our crucibles fabricated by Applied >>Fusion (at Andy Calvert's suggestion from USGS in Menlo), which cost >>another $375 per crucible (so total cost was about $700 per crucible if >>bought in reasonable numbers and the moly crucibles seem to last longer >>than the Niobium ones). Their contact info is: >>Applied Fusion >>1915 Republic Avenue >>San Leandro, CA 94577 >>ph: 510-351-8314 >>fax: 510-351-0692 >>[log in to unmask] >>Ron Musgrove - CEO >>Ron Holton - VP Fabrication >>http://www.appliedfusioninc.com/ >> >>Dave - in response to your question on thermocouples, we had a custom >>thermocouple made by our physics machine shop which consisted of an Omega >>unsheathed fine gauged type C thermocouple that comes with a bead at the >>top (T5R and T3R series). The bare wires can be fed through a standard >>2-hole ceramic thermocouple insulator, also available from Omega. We then >>designed a teflon cylinder with a blind hole drilled into the top designed >>to hold the thermocouple insulator. The blind hole had small holes in >>either side to feed the thermcouple wires through the blind hole to the >>outside of the cylinder. The teflon cylinder is slotted at the base to >>fit into a standard conflat flange electrical feedthrough. We put small >>set screws into the electrical contacts to attach the thermocouple wires >>into each feedthrough and covered the teflon base with shrink wrap to >>avoid having the thermocouple wires touching anything. If the >>thermocouple breaks, you can just swap out the beaded wire, which is a >>stock item from Omege for about $60-$80, which is much cheaper than what >>Heine was charging for repairs and with a faster turnaround time. It >>sounds a bit more complicated than it actually is. I can have someone >>take some photos if you are interested. >> >>Hope this is helpful. >> >>Cheers, >>Martin >> >>-- >>Martin Wong [log in to unmask] >>Graduate Student www.uweb.ucsb.edu/~mwong >>Dept. of Geological Sciences Phone: (805)893-2782 >>UC Santa Barbara Fax: (805)893-2314 >>Santa Barbara, CA 93106 >> >>Current contact info: >>Visiting Assistant Professor >>Department of Geology Colgate University 13 Oak Drive Hamilton, NY 13346 >> >>Ph 315/228-7203 Fax 315/228-7187 [log in to unmask] > > >********************************************* >Dr Nicolas ARNAUD, PhD >Chargé de recherche CNRS >Directeur de la Fédération de Recherche 2035-ISTEEM > >UMR 5573 CNRS, Laboratoire de Dynamique de la Lithosphère (LDL). >Groupe de Géochronologie >CC 066 >I S T E E M - U S T L >Place Eugène Bataillon >34095 Montpellier Cedex 5 >FRANCE > >Tel: (33 0) 467143729 >Fax: (33 0) 467143729 > >[log in to unmask] >___________________________________________ > > [log in to unmask]