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Recent content by petersi

  1. petersi

    rubber part molded with fabric

    I need to make a rubber part molded with fabric. The end product is similar to the attached picture. The idea to make this rubber part molded with fabric is once the mold is opened, someone place a fabric ring into the mold then close the mold and the rubber raw material shot into the mold and...
  2. petersi

    rubber part molded with fabric

    I need to make a rubber part molded with fabric. The end product is similar to the attached picture. The idea to make this rubber part molded with fabric is once the mold is opened, someone place a fabric ring into the mold then close the mold and the rubber raw material shot into the mold and...
  3. petersi

    low budget mold for prototype

    Thank you. Silicone mold is very soft. it is able to use in regular molding machine?
  4. petersi

    low budget mold for prototype

    I made some plastic mold before and they are very expensive. Now, I want to make a tyre and need to test the rubber material (not sure if I can be success) that's why I seeking if there is any low budget mold for my purpose. Let's say I will need a mold for testing material for molding 300...
  5. petersi

    Reverse engineering for rubber tyre

    I am looking for material that can make the tyre soft and with high grip, as you said is for final heat. The tyre no need to last long, just high grip and with good tensile strength. Natural rubber is good but not good enough for my application. I had some tyres on hand made with natural...
  6. petersi

    Reverse engineering for rubber tyre

    I want to make some toy car tyre. And I have no idea what are the material needs to be mix. So, I am planning to send some rubber tyre to a lab for analysis. According to the lab, they said they can get close to 95% of the material contains in the tyre. And they will let me know how the...
  7. petersi

    Kashima Coat, is this the best?

    I am looking for the smoothest coating for car shock body (made by 6061) which will rub against piston. Found this costing called Kashima Coat, http://www.kashima-coat.com/en/experience/whats_cashima_coat.php Want to know if there is any other coating what works for my need? Ot something better...
  8. petersi

    Bluetooth for iOS

    Hi, I am working on a weight scale project with bluetooh. The scale will send the numeric data to iOS or Android then showing the result on screen. The scale will be using only bluetooth HID profile. Have many questions for bluetooth device work with iOS and Android. For iOS, 1. As we us only...
  9. petersi

    what kind of grease is this?

    What is this grease? Aluminum grease? I see no where is selling grease at this silver color? thx
  10. petersi

    Purchase Bluetooth module with FCC still needs to apply FCC for final product?

    Hi, Want to confirm this. If I use Bluegiga bluetooth module which already got FCC. Do I still need to apply FCC for the final product? How much is talking about if apply FCC? The min.. THanks
  11. petersi

    7075 alumimium gear coating

    I'm looking for a coating treatment to lower Friction and Wear on this alu gear. This gear runs with nylon spur gear. Please advice and thanks so much.
  12. petersi

    What other steel has more ductile then S2 Steel

    I made some axles (something like the attachment)using #45 mid carbon steel and S2 Steel for testing. The #45 steel is wearing way too fast and the S2 steel is better but still not good enough. I am looking for some advises on what other steel has more ductile and longer wearing then S2 Steel...
  13. petersi

    Shiny surface like Xbox case

    Thank you for your help. I will talk to the mold company to make the shiny plastic surface. What kind of the plastic should be use for that shiny surface. I am making a device for indoor usage and now designing the plastic case. THanks
  14. petersi

    Shiny surface like Xbox case

    I'm wondering what makes it so smooth and shiny on the Xbox plastic case? I see my TP-Link router has the same kind of finishing but in white color. After the plastic part get out of the molding machine, what procedure needs to be done in order to get that smooth and shiny effect? If not too...
  15. petersi

    Brushless Motor's Rotor length affect the performance?

    Mike, Thanks so much. I was expecting the torque will go up too. I can't change the setting or winding on the stator. The only thing I can change is the rotor. So, according to your say is longer magnet has more torque. Also I know thicker magnet will increase torque too. As both methods make...

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