Hi All, Thanx for your answers. I have a small electric oven, swiss made (used by my daughter to "bake" enamels), 1 kW, able to reach 800 °C. I think to use it to experiment as per Alen and Jesse advices (heat the parts in the oven and drop them in oil).It seems to be an easy and nice process. The problem is temperature control. I have to design some temp regulation ! Regards PIerre pierre.courbouleix@xxxxxxxxxx This e-mail is intended for the adressee(s)only and may contain info that is the property of, and/or subject to a confidentiality agreement between the intended recipients.If you have received this e-mail in error, please contact the originator of this e-mail via e-mail and delete copies from your computer or network. Misuse of the content of this e-mail message may violate the Laws of your Country MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.