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Type: Posts; User: jchal3

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    Dxf imported into solidworks

    When I import a dxf file into solidworks it comes in as a million little sketches as opposed to curves. These small sketches really do a number on my waterjet machine when I try to cut it out.
    ...
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    Re: Shrink factor for really thick piece?

    Did a little research, and I was wrong. It's not a gas release, it's risk of explosion. See the link below..again sorry to raise a red flag safety is for losers
    Processing PVC and Acetal -...
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    Re: Shrink factor for really thick piece?

    Mactec54, you are right next time I'll keep my mouth shut and hope nothing happens. Wouldn't wanna tell someone to be careful or put an extra emphasis on safety and be wrong.

    Sent from my Z958...
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    Re: Bad surface finish on really thick part

    I would guess the material was too cold, or not enough hold pressure / time

    Sent from my Z958 using Tapatalk
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    Re: Shrink factor for really thick piece?

    I believe it puts off mustard gas or nerve gas I can remember for sure. I just remember it was a big no no

    Sent from my Z958 using Tapatalk
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    Re: Help a n00b - polishing aluminium moulds?

    I have achieved a mirror finish with the two. Just an FYI it works. Glad you worked out your issue.

    Sent from my Z958 using Tapatalk
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    Re: Shrink factor for really thick piece?

    Just a quick safety note..don't let that acetal mix with any PVC. I don't know what you run in your shop, but they don't like each other.

    Sent from my Z958 using Tapatalk
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    Re: Help a n00b - polishing aluminium moulds?

    Try mothers polish and scotch brite

    Sent from my Z958 using Tapatalk
  9. Re: Please i need advice in the plastic injection industry

    I have 15 years in the plastic injection molding industry. The above info is correct the machines are rather large depending on the size of the part. The size of the part determines the barrel size...
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    Looking for a font

    I've looked all over trying to buy this font. I've seen it called interlocking vine on Google images. But I can't seem to find it anywhere.

    Do any of you guys know where to get this.
    ...
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    Profile cuts starting at the wrong point

    My profile cuts are starting in the wrong spot. It only happens on the initial pass, the other passes follow right with the program.

    Anyone else have this issue? Any one know what is causing...
  12. Thread: Bit selection

    by jchal3
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    Bit selection

    Hello. I run a diy router table to cut mostly 1/2in mdf parts. I am using a 1/8in downcut spiral bit with a 1/4in shank. I find that the top edge of the wood is cut nicely, but the bottom of the...
  13. Ger, I kinda thought that might be the case. ...

    Ger,

    I kinda thought that might be the case. They were freebies along with the drivers.

    What size motors and drivers would you suggest. I wouldn't be opposed to selling these to purchase new....
  14. They are pretty large motors....65vdc each. I'm...

    They are pretty large motors....65vdc each. I'm running a 150watt power supply for all three. They are running on pac sci 5310 drivers.

    I noticed the acme threads that are driving the x and z...
  15. Alright, here are the pictures of my machine. ...

    Alright, here are the pictures of my machine. Please be kind....remember it was built as a hobby machine from spare parts. Taking these pictures made me realize I have a long way to go...
  16. Thanks for the responses guys. I will get some...

    Thanks for the responses guys. I will get some pics of the machine and specs on the motion control system up shortly.

    I will say it was mentioned that cheap screws and resonance could be part...
  17. Diy cnc machine is having trouble with speed and accuracy.

    Hello. I have been running my diy cnc wood router for about a year now making mostly hobby stuff for myself. I an stsrting to get a lot of requests from people asking me to make items for them, and...
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    Machined Foam Prototype

    I am looking for some quick help. One of my clients is looking for a foam prototype of a hopper. The foam prototype is going to be finished and painted by my client. Please pm me is you are...
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    Hub, When you say AL flex coupling, is that...

    Hub,

    When you say AL flex coupling, is that the same as a lovejoy coupling. Basically one half for the motor, one half for the shaft, and a rubber spider in the middle? I think that is what you...
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    I am using the microstepping settings. It is set...

    I am using the microstepping settings. It is set to 25:1. My motors do not havea double shaft, so I'll have to get creative to figure out the resonanace issue.
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    Hub, My motors definietly sound like the...

    Hub,

    My motors definietly sound like the motors in the video. This may be a dumb question but what is resonance and what causes it?

    I'm going to do a you tube search and figure out how to...
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    Don, Thanks for the resonse. I am driving the...

    Don,

    Thanks for the resonse. I am driving the router with Mach 3.

    The motors are 7.5 amp bipolar motors that run at a max of 65vdc
    The drivers run at 12-75vdc. All three axis are the same.
    ...
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    Stepper motor troubles

    Hello,
    I have a homemade cnc router. It has three pacific scientific motors and drivers on it. The problem I am having is as follows: as the machine runs a program, the motors will lock up and...
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    how to set the origin in Mastercam

    Hello everyone. I am not a cnc wizard by any stretch of the imagination. I have a cnc router that I like to mess around with, and am having a little bit of trouble. I use Mastercam to produce my...
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    Oleks, I don't know a whole lot about these...

    Oleks,

    I don't know a whole lot about these drives. I was just digging into them myself, however I do know that the three I have came off of a high speed packaging machine. I am thinking the...
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