M08 has no delay built in in D2

rimcanyon

Diamond

Joined

Sep 28, 2002

Location

Salinas, CA USA

• Mar 5, 2021

• #1

I add an M08 after every tool change, since the tool change shuts off coolant flow. However, by the time the coolant flow is full, the cutter has cut ½” or so. Is there any way to add a dwell? I suppose I could convert the G00 after the tool change to a G01 to slow it down, but I’m looking for a better solution than messing with feed rates. Maybe add a check valve at the pump outlet?

 

C

Colt45

Hot Rolled

Joined

Nov 27, 2004

Location

SLC, UT

• Mar 5, 2021

• #2

Not sure about D2 but in D4 you can use a G4 dwell, F is the time in seconds.
Check valve on the coolant wand is the best/easiest solution IMHO.

 

rimcanyon

Diamond

Joined

Sep 28, 2002

Location

Salinas, CA USA

• Mar 5, 2021

• #3

Another solution might be to go to a smaller coolant line. The one that comes from the pump to the valve at the wand is about ½" braided vinyl. ¼" or ⅜" would be less volume to fill. I keep the valve throttled down to control flow so the pump needs to both fill the tube and overcome the head due to the restriction. What size tubing are you using?

 

C

Colt45

Hot Rolled

Joined

Nov 27, 2004

Location

SLC, UT

• Mar 5, 2021

• #4

Whatever the factory size hose is - think it's16mm or 5/8"-ish.
Put a check valve in a long time ago (think the idea came from Ross)- never had an issue since.
Suspect you might still have issues with small hose, there's a fair amount of distance and a lot of gravity working against you.
Ran a bijur system for a while with very small tubes and it had the same issues until we put a check valve in.

 

Last edited: Mar 5, 2021

Mud

Diamond

Joined

May 20, 2002

Location

South Central PA

• Mar 5, 2021

• #5

I put a common plumbing dept. check valve at the pump.

 

rimcanyon

Diamond

Joined

Sep 28, 2002

Location

Salinas, CA USA

• Mar 6, 2021

• #6

OK, check valve it is.

 

rimcanyon

Diamond

Joined

Sep 28, 2002

Location

Salinas, CA USA

• Mar 7, 2021

• #7

Mud said:

I put a common plumbing dept. check valve at the pump.

Click to expand...

Do you happen to recall the thread size? ¼ NPT? ⅜ NPT? Looks like I will need to order it so I would rather not disassemble till I have parts in hand.

 

Mud

Diamond

Joined

May 20, 2002

Location

South Central PA

• Mar 7, 2021

• #8

Don't remember exactly, and I'm not near it to look. ISTR some adapting to euro fittings to make it work. I used a couple garden hose adapters after the check valve to make easily disconnectable for cleaning the tank.

 

1

13engines

Stainless

Joined

Jun 30, 2015

Location

Saint Paul, MN

• Mar 7, 2021

• #9

Aren't coolant pump outputs normally in the 3/4 -1" pipe range? Oh wait... Deckel D2. Maybe not.

Never hurts to put a 2nd smaller check valve right at the nozzle or where the piping leaves the machine near the spindle. If using any Loc-Line type stuff, they have check valves you can insert right before the nozzle. With a dual setup, or even a perfectly working single at the pump, you will have instant on coolant.

 

A

AlfaGTA

Diamond

Joined

Dec 13, 2002

Location

Benicia California USA

• Mar 7, 2021

• #10

Think the coolant lines are BSP.
Cheers Ross

 

rimcanyon

Diamond

Joined

Sep 28, 2002

Location

Salinas, CA USA

• Mar 7, 2021

• #11

AlfaGTA said:

Think the coolant lines are BSP.
Cheers Ross

Click to expand...

taper or straight (bspt or bspp)?

 

A

AlfaGTA

Diamond

Joined

Dec 13, 2002

Location

Benicia California USA

• Mar 7, 2021

• #12

Believe its straight...But i will check tomorrow...I did my FP4 with "Lock-Line" for the cool;ant and they have PSP fittings...don't think it matters in plastic if tamperer or straight...it just conforms.
Cheers Ross

 

Mud

Diamond

Joined

May 20, 2002

Location

South Central PA

• Mar 8, 2021

• #13

Here's a photo of mine. Ignore what I said about hose connectors, that must have been something else. Your pump is probably different from this one.

 

rimcanyon

Diamond

Joined

Sep 28, 2002

Location

Salinas, CA USA

• Mar 8, 2021

• #14

Mud said:

Here's a photo of mine. Ignore what I said about hose connectors, that must have been something else. Your pump is probably different from this one.
View attachment 315879

Click to expand...

Thanks Mud. Yes, I have the identical pump. It is installed 180 degrees from yours, but I like yours better, may change. So I plan on ordering a ⅜ NPT check valve and a pair of NPT-BSPT adapters.