This advice is coming from a mill guy so procede with caution. Click your rough parameters tab then go into your plunge parameter settings and you have several options. Try them and see wich one works for you. I'm sure the lathe gurus will be able to help you more.

I seen similar problems if the tool plane is incorrect.

Without seeing your part it is hard to know for sure but for the slot I would use one tool to rough and another to finish T1 .500 diameter Niagra Stabilizer TIALN coated RPM = 400SFM = 3056 Feed = .0017 per tooth = 20.8 ipm Toolpath = contour ramp leaving .007 on walls and .007 on floors if the slot is not through T2 .500 diameter Niagra Stabilizer TIALN coated RPM 3800 FEED 24 ipm Toolpath 2D contour may need to slow down the feed in the corners These are the feeds and speeds suggested by the manufacturer for 316 and 304. I used this method with the exact same feeds and speeds in 304 with great success. Make the endmills as stubby as possible and hold them in milling chucks. Make your setup as rigid as possible. It would help if we had more information about the part for example the slot depth and length etc. For the drilling I would use a Guhring Series 5514 drill or its equivelant with through the spindle coolant. Do not use a spot drill. If you must peck use a G73 chip break cycle not a G83. I would only run it at about 1/2 the speed and feed as Guhring suggests.

Thanks every on for the help. I ended up drilling the hole to .359 diameter then reaming it to .375 diameter down to the start of the drill point. Then I went in with the flat bottom counterbore tool from Harvey Tool to remove the material left from the drill point. This works very well. Next time I get a part like this I think I will try the flat bottom drills to see if I can save some time. Thanks again

Mic No EDM.

Thanks for all the replies. The tolerance for the location is +-.002 in the X direction and +-.002 in the Y direction. The tool from Harvey looks good. I'm always pleased with there products. Do they make those in metric. This part also has another bore coming through the other side of the part with a flat bottom that has a diameter of 8.1mm or .319 inches. This one is only 1.102 deep with the same tolerances. Thanks for all the help

I need to drill or bore a hole on a horizontal mill that has a flat bottom. (No drill point allowed). The hole is .375 diameter 2.559 deep. The material is aluminum 6061. The tolerance is +-.004 on the depth and the diameter. Whats a good way to make this bore with the flat bottom. I was thinking of trying a flat bottom drill but I never used one before. Is this a good approach and if so do I need to rough the bore first then finish with the flat bottom drill? Would using a boreing head be a better option? Thanks

Thanks for all the info the sprocket c-hook looks really good. We use a lot of 7050 and I think it is more exspensive than 7075. That doesn't mean it would be better for this application. If anyone knows the difference I'd really like to hear it.

Del, Thanks I will look into that.

I have an opportunity to design and sell some rear sprockets for motocross dirtbikes. They would be after market parts for Honda, Kawasaki, Suzuki, Yamaha, and KTM. This is a very good opportunity for me because I ride motocross. I was wondering where I can get information on sprocket dimensions and tolerances. Also most manufucturers make the rear sprockets from 7075 T6. I would also like to know why this is the material of choice and if there may be something better to manufacture them from. I'm very new to to this type of work and any imformation would be helpful. Thanks

You can try this. I did it with a simple model and it worked but I don't know what your dealing with. 1. Create a solid from your surfaces 2. Use solids find features to bring up history on the fillets 3. Change the fillet size using the solids fillet parameters. HTH

The only thing I'll be working today is the BBQ.

Solids/Find Features will bring back some of the history.

MrFish Like I said I am new to this machine but I can ask our Deckel expert tommorrow. I will let you know what he says.

I just started using this machine. It is a Deckel Maho DMU100P buoBlock with a TNC530 control. Our post was purchased from IN House Solutions. I suggest you get your post from them. Here is a sample of the code: 0 BEGIN PGM RR0295373-156-997 INCH 1 ;MASTERCAM - X 2 ;MCX FILE - C: 3 ;MATERIAL - ALUMINUM INCH - 2024 4 ;PROGRAM - 5 ;DATE - JUN-29-2010 6 ;TIME - 10:18 AM 7 ;POST DEV - IN-HOUSE SOLUTIONS INC. 8 ; 9 ;TOOL - 43 | #2 CENTER DRILL | | DRILLING 200 10 ;TOOL - 12 | NO. 40 DRILL | | DRILLING 200 11 ;TOOL - 41 | 1/4 FLAT ENDMILL | | SWARF5AX... 12 CYCL DEF 247 DATUM SETTING ~ Q339=+0;DATUM NUMBER 13 M126 M129 14 L Z-.1 R0 F MAX M91 15 L X+10 Y-.1 R0 F MAX M91 16 ; 17 * - #2 CENTER DRILL | SPOT DRILL 6 PLACES 18 ;TOOLPLANE NAME - TOP 19 TOOL CALL 43 Z S1500 20 TOOL DEF 12 21 L Z-.1 R0 F MAX M91 22 L X+10 Y-.1 R0 F MAX M91 23 ; 24 CYCL DEF 19.0 WORKING PLANE 25 CYCL DEF 19.1 A+90 B+0 C+321.345 26 L B+Q121 C+Q122 F MAX 27 ; 28 M08 29 L X+0 Y+12.948 F MAX M3 30 L Z+1.949 F MAX 31 CYCL DEF 200 DRILLING ~ Q200=+.25 ; SET-UP CLEARANCE ~ Q201=-.075 ; DEPTH ~ Q206=50 ; FEED RATE FOR PLUNGING ~ Q202=+1 ; PLUNGING DEPTH ~ Q210=+0 ; DWELL TIME AT TOP ~ Q203=-2.051 ; 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C+Q122 F MAX 71 ; 72 M08 73 L X+0 Y+12.948 F MAX M3 74 L Z+1.949 F MAX 75 CYCL DEF 200 DRILLING ~ Q200=+.25 ; SET-UP CLEARANCE ~ Q201=-.15 ; DEPTH ~ Q206=60 ; FEED RATE FOR PLUNGING ~ Q202=+.05 ; PLUNGING DEPTH ~ Q210=+0 ; DWELL TIME AT TOP ~ Q203=-2.051 ; SURFACE COORDINATE ~ Q204=+4 ; 2ND SET-UP CLEARANCE ~ Q211=+0 ; DWELL TIME AT BOTTOM 76 L X+0 Y+12.948 F MAX M99 77 L X-.0026 Y+12.0301 F MAX 78 L X-.0026 Y+12.0301 F MAX M99 79 M140 MB MAX 80 CYCL DEF 19.0 WORKING PLANE 81 CYCL DEF 19.1 A+90 B+0 C+341.385 82 L B+Q121 C+Q122 F MAX 83 L X+0 Y+12.948 Z+1.949 F MAX 84 L X+0 Y+12.948 F MAX M99 85 L Y+12.03 F MAX 86 L X+0 Y+12.03 F MAX M99 87 M140 MB MAX 88 CYCL DEF 19.0 WORKING PLANE 89 CYCL DEF 19.1 A+90 B+0 C+1.345 90 L B+Q121 C+Q122 F MAX 91 L X+0 Y+12.948 Z+1.949 F MAX 92 L X+0 Y+12.948 F MAX M99 93 L Y+12.03 F MAX 94 L X+0 Y+12.03 F MAX M99 95 M09 96 M5 97 M140 MB MAX 98 CYCL DEF 19.0 WORKING PLANE 99 CYCL DEF 19.1 100 L Z-.1 R0 F MAX M91 101 L X+10 Y-.1 R0 F MAX M91 102 L B+0 F MAX 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I have noticed that if I don't save my file immediately after deleting planes in the view manager that they come back. Has anyone else seen this?

I like the idea also Chris. I'm just starting to use dynamic milling and really like the results.

TOP WCS and Front view for B0 then rotate from there. This is my method. We only do single parts at a time so everything is programmed from centerline with one fixture offset.

Thanks for the advice everyone. I'll let you know the results.

Anyone using dynamic milling with bullnose endmills in aluminum. The job I am doing would require a 1/2 inch endmill with .125 corner radius. If so what brand would you guys suggest.

Thanks for the replies everyone I have it working now.

While we are on the subject how do I enter info into the title block such as company name etc..

Colin What you suggested worked. However I had to change my drafting scale to 2.0 not .5

Thanks I thought there had to be a way to get it to work.

I tried using the solids layout feature today to make a 4 view ANSI print. When the scale factor was set to 1.0 I recieved an error message telling me the parts would not fit on the page. So I scaled the parts to .5 and got them to fit. The problem I had was after I did this I tried to add dimesnions and they were also scaled to .5 so a dimesnion that should have showed up as 1.00 was coming out at .500. I ended up going back in and changing the dimesnions through anylize entity properties and multiplying them by 2. This was very time consuming and left room for error. Am I missing something. What good is this feature if you can't fit it to a page and get the true dimesnions to show up when you add drafting.