Patmarlins Specialty Products for Casting and Reloading
Checkmaker Gas Check Forming Tool and Die sets
ROCKDock -Reloading Bench Docking Mount System (Patents Pending)
Dillon 550B
"At last, the mailman brought the gadget I had been waiting for, the press docking mount from our very own Pat Marlin. As I expected, it is beautiful! This is a great setup, and for those of us whose benches must serve multiple purposes it is a wonderful addition. I had the docking mount installed in less than half an hour, and my Star and Lee presses bolted to their plates soon after. I shimmed it a bit, like the instructions say to do, and had it working to my liking in no time. I added a rail in front of my bench for my Akrobins, for that added bit of functionality. I highly recommend this setup! Thanks Pat,this thing is great!"
-Chris Smith
Outstanding product, overbuilt. Good communication!
-Tom Earley
Excellent,very good job...
-Richard ivanich
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If you're like me you have limited reloading bench space, and now I find I need to move my presses more frequently... from loading bench to the shop, from the bench to the range, or to a portable bench in front of the TV.Then sometimes I need to easily swap bench positions of my presses and lube sizers for various tasks. Add the fact that I use 3 lube sizers each holding my favorite lubes, 4 presses and growing- bolting and unbolting is a pain.
I wanted to create a real strong- design that looked good on the bench and served other functions. This heavy duty docking mount system has exceeded expectations in every way and proved to be rock solid and a joy to use.
Patmarlins is a new up and coming company that is the genesis of what true American ingenuity can be in today's world.
A manufacturing and product development shop, completely off grid and solar powered in the Shasta Trinity National Forest- probably the only off grid machine facility in the shooting industry. Starting with just a small lathe 2 years ago, to a fully outfitted manual shop that now includes 3 automated, 3phase industry standard CNC machines.
Pat's designs are original and unique with more exciting new products to come on the horizon, providing quality- imagination, and old American values in service and workmanship for his customers.
-Jay Lewis
the Dillon 550B ROCKDock!
ROCKDock your Powder Measures

"Everything including the Saeco fits like a glove!!! THANK YOU SO VERY MUCH FOR YOUR HARD WORK!
You have fixed a problem I have had with mounting these presses for the last 25-30 or so years. I am like a kid with a new toy! Take care and god bless....."
-Buck Able
Patmarlins Machined ROCKDock reloading bench Docking Mount System comes complete with bolts and instructions.
Docking Mount- holds the press base plate down solid and spreads the foot print of your base on your bench, spreading the load over the bench instead of stressing just the leading edge. Base slides in and out solid without having to use a tool to tighten down.
Base plates- Predrilled with grade 8 bolts for your model reloading press, lube sizer, case prep tools, vises etc.
-Current prices for the Standard size and Large size ROCKDock systems:
Standard Size ROCKDock System:
$34.95 -Standard Size ROCKDock docking mount including grade 8 bolts. Lube heater shelf is now an option.
$12.95 -Lube heater shelf -order Fixed or Removable style. (Cross back piece).
$16.95 -Pre-drilled standard plates for your press including grade 8 bolts (most all makes of presses)
$19.95 -Bases drilled for threaded powder measures (RCBS, Redding, etc. Specify for 1 or 2 measures)
$36.95 -Dillon 550B
$36.95 -RCBS Pro-2000
$16.95 Dillon 650
$16.95 Dillon square deal
$22.95 -Belding and Mull powder measure (milled and recessed to hold solid)
$19.95 -Mec 600's standard mount
$23.95 -Mec Super Sizer standard mount
$13.95 -Blank Standard base plates.
$16.95 -6" Blank Standard base plates.
USPS Priority® Shipping
$5.20 -Shipping up to 3 standard base plates and mount, plus $2.35 Signature confirmation USPS Priority mail
$10.55 and $2.35 Signature confirmation USPS Priority mail Shipping over 3 standard base plates and mount. (Sub plate mounts $10.55 Med Flat Rate)
Free CFF casting flux on ROCKDock orders $100 or more.
-Email for International Rates-
Large Size ROCKDock System:
$34.95 -Large Size ROCKDock docking mount including grade 8 bolts. Lube heater shelf not inlcuded.
$12.95 -Lube heater shelf (available REMOVABLE only on Large Dock)
$24.95 -Pre-drilled large plates for your press including grade 8 bolts.
$24.95 -for the large Mecs
$36.95 -Dillon 550B
$21.95 -Blank Large base plates (no mounting bolts).
Free CFF casting flux on ROCKDock orders $100 or more.
-Prices are subject to change due to metals increases-
-Email your name, address and order wishes/questions and I will email back an order confirmation with payment instructions-
We accept Check, Money Orders, and PayPal payments.
Pat -
West Coast Engineering
Lube Heater-
The Lube heater shelf works EXTREMELY well. It transfers heat to your lube so efficiently, you only need run your iron at a very low setting to dial in just the right temperature for your boolit lube. Lube heater uses clothes iron shelf on top to heat your lube sizer- warming your favorite lube
Lube heater shelf is included with the Standard Docking Mount at no additional charge. (iron not included)
All machined parts out of 6061 T6 aircraft aluminum complete with instructions all mounting hardware. Makes for a rock solid mounting and is guaranteed to have a no slop snug fit from press to press and bench to bench. A lot of work and craftsmanship goes into making this quality product made here in the USA.
Shipping:
USPS 3day Priority mail to the USA for one docking mount and up to 3 base plates...$5.20 plus $2.35 Signature confirmation. Larger orders medium Priority Flat Rate box $10.95 , International (actual cost) shipping charges extra for all orders.
Free CFF casting flux with your ROCKDock order of $100 or more.
-What's CFF? go here for details:
http://castboolits.gunloads.com/showthread.php?t=27972
ROCKDock MASTER PRESS list
Designated to fit Standard or Large Version.
Gear I have templates in stock for and have mounted...
Lyman 45 Lube Sizer -std, lrg.
Lyman 450 Lube Sizer (no internal heat opt.) -std, lrg.
Lyman 4500 Lube Sizer (bolt same as 450, has internal heat opt.) -std, lrg.
Lyman Lube Heater (4 hole heater base UNIVERSAL heater) -std, lrg.
Lyman 55 powder measure (.610 hole) -std, lrg.
Lyman All American (Lrg. only)
Lyman Orange Crusher -std, lrg.
Lyman Spar-T -std, lrg.
Lyman Tru-Line JR -std, lrg.
Lyman T-Mag press -std, lrg.
RCBS Turret (same as rock chucker 2 hole) -std, lrg.
RCBS A-3 (same rockchuker bolt patter) -std, lrg.
RCBS Ammomaster 3 hole -std, lrg.
RCBS Ammomaster BMG -std, lrg.
RCBS JR3 press -std, lrg.
RCBS Partner Press -std, lrg.
RCBS 4x4 press (Lrg. only)
RCBS Rockchucker -std, lrg.
RCBS Rockchucker II -std, lrg.
RCBS Rockchucker IV -std, lrg.
RCBS Rockchucker Supreme -std, lrg.
RCBS Rockchucker RS3 -std, lrg.
RCBS Lube-a-matic -std, lrg.
RCBS LAM II Luber -std, lrg.
RCBS Uniflow Powder Measure Stand -std, lrg.
RCBS Uniflow without stand -std, lrg.
RCBS Reloader Press (same as 2 bolt Rockchucker) -std, lrg.
RCBS "R.S." Reloading Special -std, lrg.
RCBS Auto Prime Tool -std, lrg.
RCBS 50 BMG Auto Prime Tool (same as "Auto prime tool") -std, lrg.
RCBS Pro-2000 -std, lrg.
RCBS Big Max (Lrg. only)
RCBS Trim Pro (Lrg. only) Sets on plate on angle. Top drill.
(There is a difference between LNL year model bolt patterns)
Hornady AP -std, lrg.
Hornady LnL Single Stage Press -std, lrg.
Hornady Auto LNL -std, lrg.
Hordady LnL AP -std, lrg.
Hordady LnL AP (New) style -std, lrg.
Hornady Projector Press -std, lrg.
Forester/Bonanza Co-ax B3 -std, lrg.
Forester Co-ax press -std, lrg.
Forester Case Trimmer (Lrg. only)
Dillon 550 (same as 550B) -std, lrg.
Dillon 550B std (w/subplate) -std, lrg.
Dillon 550B Lrg (no/subplate) -std, lrg.
Dillon 650 -std, lrg.
Dillon Square Deal -std, lrg.
Dillon Super Swage -std, lrg.
Dillon Square Deal B (same as sq-deal) -std, lrg.
Dillon RL 300 (Lrg. only)
MEC 600 Jr (Pre '82) (3 hole) -std, lrg. (w/removable Lube Heater Shelf)
MEC 600 Jr ('82-'85 on) (3-4 hole) -std, lrg. (w/removable Lube Heater Shelf)
MEC 600 -(3-4 hole) -std, lrg. (w/removable Lube Heater Shelf)
MEC 650 JR Mark 5 (Pre '82) (3 hole) -std, lrg. (w/removable Lube Heater Shelf)
MEC 650 JR Mark 5 ('82-'85 on) (3-4 hole) -std, lrg. (w/removable Lube Heater Shelf)
MEC Sizemaster (Lrg. only)
MEC Supersizer (Lrg. only)
MEC Grabber and Mec 9000 (Lrg. only)
MEC 8567 Grabber (Lrg. only)
LEE Classic Cast Single -std, lrg.
LEE Classic Cast Turret -std, lrg.
LEE Old style aluminum turret -std, lrg.
LEE Pro-1000 -std, lrg.
LEE Loadmaster -std, lrg.
LEE Reloader Press -std, lrg.
LEE "C" Reloader Press -std, lrg.
LEE Challenger "O" frame press -std, lrg.
LEE Breachlock Challenger -std, lrg.
Redding T-7 Turret Press -std, lrg.
Redding T-25 -std, lrg.
Redding Big Boss -std, lrg.
Redding Big Boss II -std, lrg.
Redding Ultra Mag -std, lrg.
Redding Ultra Mag II -std, lrg.
Redding Powder Measure (7/8" hole) without stand -std, lrg.
Redding 2400 Case Trimmer -std, lrg.
Saeco Lubesizer -std, lrg.
Star Luber Sizer -std, lrg.
Magma Star Luber Sizer -std, lrg.
C-H 204 C press -std, lrg.
C-H 4 Station Press (Lrg. only)
Herters 3A Press (Lrg. only)
Herters 0-3 Press -std, lrg.
Ponsness Warren P-200 Press (Lrg. only)
Ponsness Warren 375 Press (Lrg. only)
Shop Fox Parrot Vise (Lrg. only)
Lachmiller Lub-a-Matic -std, lrg.
Ross and Webb Press -std, lrg.
Sinclair International -std, lrg.
Sinclair Trimmer Stand -std, lrg.
Powder Measures -All makes of 7/8-14 threaded (7/8" hole) -std, lrg
Belding and Mull Powder Measure -std, lrg.
All Large Version ROCKDock systems have the Lube Heater Shelf as an option only. It's a removable version only. Please specify if you want one when ordering.
All Standard Version ROCKDock systems include the lube heater shelf option as well. It comes stationary- (standard configuration) and can be ordered removable. Standard version orders with base plates for the MEC 600 for an example, come supplied with a removable lube heater shelf (due to clearances).
The size of the useable space on the standard model ROCKDock base plate is approximately 5 1/2" wide and up to 6" deep, depending on the lube heater shelf. Lube heater shelf can be ordered fixed mounted or removable. Overall footprint is 8 1/4" wide x 7" deep.
The Large version ROCKDock base plate useable space is approximately 7" wide x 8" deep. Lube heater shelf is an optional item and removable only.
Overall footprint is 9 1/2" wide x 8" deep.
If it will fit there, it will work and can be mounted.
Bolt pattern for rail holes start from the front edge of the bench going backwards (on center): 1/2", 3", and 5 1/2". Wood cross members underneath can be counter sunk with a flat wood drill bit to accommodate bolts. Wood spacers can be put under a thin bench if the bolts are to long.
Patmarlins
Checkmaker Gas Check Forming Tool and Die Sets (Patents Pending)
Find out about and see how our... Checkmaker Gas Check Forming Tools work including examples and customer accuracy results.
The accuracy reports keep rolling in!...
Mother of all Checkmaker Dies Links
http://castboolits.gunloads.com/showthread.php?t=104930
Introducing the 50 Caliber Checkmaker Dies
http://castboolits.gunloads.com/showthread.php?t=132597
Using the Checkmaker 45PB Pistol Caliber Dies
http://castboolits.gunloads.com/showthread.php?t=133265
Explanation of the Theory and Engineering behind Checkmaker Gas Check Forming Dies-
http://castboolits.gunloads.com/showthread.php?t=89742
Here's more links for feedback and shooting test results:
Comparison between PatMarlins Checkmaker 32/8mm checks & Hornady commercial-
http://castboolits.gunloads.com/showthread.php?t=91133
Just in- New test report on the 35PB cal Checkmaker
http://castboolits.gunloads.com/showthread.php?t=93833
It's Alive! -The 45 Cal Checkmaker
http://castboolits.gunloads.com/showthread.php?t=95414
Checkmaker sized with LEE push through dies for Ben's 35 cal dream rifle:
http://castboolits.gunloads.com/showthread.php?t=100428&page=2
http://castboolits.gunloads.com/showthread.php?t=100428
Checkmaker Dies arrive complete and ready to work with your reloading press, and are guaranteed to be spot on and work flawlessly. Free sample of CFF casting flux included with all die orders.
Checkmaker price is $74.00 for all dies (35 caliber and smaller).
Checkmaker price is $84.00 for all dies (larger than 35 caliber).
All dies $5.20 shipping and $2.35 Signature confirmation USPS Priority mail per die set. $10.95 shipping for 2 or more sets combined.
45 caliber dies work for both for 45 cal pistol and 45 cal rifle with one (1) set and are $84.00 . You simply adjust metal thickness.
45PB caliber dies (plain base) use a separate set of dies each- one (1) for pistol and one (1) for rifle. You need to specify which one.
For first die set orders- ram ejector arms are included (one per customer). Specify what model single stage press you have. Additional ram ejector arms a $4.95 including shipping. The LEE style ejector arm now works for the LEE Classic Turret press. Custom diameter order male dies to your specification $9.95.
Free sample of casting flux CFF- California Flake Flux included with all die orders.
International shipping (USD):
$13.95 -International shipping USPS Priority mail for up to 2 die sets.
$11.50 -Optional international full replacement loss coverage insurance (per die set), your choice. We will not cover dies lost without insurance.
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-Email your name, address and order wishes/questions and I will email back an order confirmation with payment instructions-
We accept Check, Money Orders, and PayPal payments.
Pat -
West Coast Engineering
"The proof is in the accuracy results"
For cast shooters- accuracy is the quest we all seek with our beloved silver stream.
Why invest in a gaget that claims to make a pile of checks in record speed, when Checkmaker dies produce excellence at only a slightly slower pace.
I want a die that produces results that shoot, not just sit there and look pretty.
.... B. R. James
Rapidly becoming the 1# choice...
Checkmaker gas check making dies are guaranteed to perform flawlessly as currently proven by numerous cast shooters:
Checkmaker Gas Check Forming Die Sets:
-Meet or exceed accuracy shooting results of factory checks.
-Very user friendly- fast and easy to use, and to set up.
-Produce a bare minimum of material waste.
-Produce concentric gas checks that fit, using the accuracy of your reloading press.
-Flexible- accommodate a wide range of material thickness- from .005 up to .018 and work with a wide range of Boolit diameters all within one caliber set.
-Will be supported and available soon in ALL calibers.
-Heavy duty designed quality machined-
All calibers will be offered in a "PB" plain base version (shown) as well so you can push your favorite plain base mold boolits to places like never before. 35PB caliber available NOW!
I tried the 35 plain base checks in my brothers 9mm thats been giving us fits. I tried a load that put quite a bit of lead in the barrel according to my notes. I put the checks on the boolits this time and guess what???
No more leading and very accurate in his pistol and carbine. These PB checks make 9mm loads very easy now. No more problems. Right there made this tool worth the money. Awesome results!
- Ken Dodge
"If I were starting over in pistol molds I would get only plain base molds. The plain base gas check makes the plain base boolit dual purpose. Only have to cast one boolit for either application."
-Robert Freestone
Here's an official PDF download link for Checkmaker die instructions. Pictures are cheezy, but I will improve that as time permits:
http://www.patmarlins.com/CheckMakerDiesInstructions.pdf
-We are now fully automated CNC and are running various calibers-
Thank you for your Kindness, business, and support of a Home Grown =American Manufacturer.
MADE in the USA! Pat -
West Coast Engineering
Pat says the following :
"These Checkmaker dies are fast and easy to set up, fast and easy to use, and produce accurate, concentric, gas checks with the help and accuracy of your reloading press and leave an extremely small amount of material waste."
He is ' dead on ' with his comments. This is a quality product and will work just as he describes. The ones I made this afternoon ( made from .010 CU ) were tried on 3 different .30 cal cast bullet designs. They fit tight on all 3.
Great Product Pat ! ! ! ....Well Done !
-Ben Hays
Hays Gunstock Refinishing and Repair
Currently we are taking Checkmaker orders and running various calibers including our "PB" caliber (PB- for "plain base" molds) gas check dies first come, first serve. CNC is NOW online!... and will be offering die sets in all calibers.
WE SHIP WORLD WIDE!
-Please understand these are heavy duty- high quality, custom made products-
Satisfaction or your money back...! You are investing in quality here. All of my products come with a "No BS" warrantee. My aim is to make you happy with your purchase.
Kindest regards,
Pat
Just a small sample of our customer feedback...
.30 cal tool used at last...
Pat I just had to let you know that the shoulder problems are almost gone (Jerry tore his rotator cuff) and I produced a pile of great looking checks today. The tool does exactly what you said and I'm in hog heaven.
Thanks for all your efforts.
Jerry B.
aka
mold maker
Simplicity and elegance
It went together like butter on hot toast and is a really nice simple
setup.
I may have to order more and I am sure once buddies see it they will
want one to clean up their tabletop.
Thanks for a great product.
Gary Banas
GOT THEM!!!
Everything including the saeco , fits like a glove!!!
THANK YOU SO VERY MUCH FOR YOUR HARD WORK!
You have fixed a problim I have had with mounting these presses for the last 25-30 or so years.
I am like a kid with a new toy! Take care and god bless.....Buck
First of all, Pat. Quality and very easy to use!!
Ernie Plumber
This seems to be one d*mn slick little tool. I had a very short learning curve, as you would with any tool. I'm sure I'll continue to refine as I experiment. I have a small pile of soda can gaschecks forming.
Patrick L.
Had a box waiting for me when I arrived home this evening. First bit of advice I can offer - retreat to your man cave before you open the box. Failure to heed this warning will cause you to be reintroduced to the Hoover. This will make sense when you open the box.
The tool is a very clever design and just takes a few minutes to become acquainted with the various parts and how they fit together. I had two materials I had put aside to try, mainly because they were free. I have some .008 soft copper and some .012 aluminum roof flashing. Both materials formed good checks. The copper was easier to work with because it cut and formed easier. Checks formed from both materials seated perfectly on the shanks of 30 cal boolits I have laying around. I did not try any through the sizer yet, but will soon.
The tool works as advertised, and looks to be an interesting gadget to experiment with. Nice job, Pat!
Vly
Hi Pat, I finally got a chance to get down to the shop and try the new punch you sent.
PERFECTION!!!
Not tight, not loose, perfect! Thanks for all the help. Oh, and thanks for the extra CFF in the box. With all this flux, I need to find another motherload of wheelweights. Now I need to get what I loaded down to the range and see how they fly !
Thanks again Ernie (aka Plumber)
I have been pleased with the results using these checks. Todays results - same gun and load as before. 1" ~ 7/8" ~ 1" Not quite one hole, but better than I was doing with factory checks.Robert F.
Pat,Received the mount and plate today! What can I say but that they are beautiful.
Trevor Green
Thank you pat, I received everything today, and have put it together.I wish I'd of had one of these a long time ago.
It's very well made and strong.
Thanks again, Keith Marshall
Satisfaction or your money back...! You are investing in quality here. All of my products come with a "No BS" warrantee. My aim is to make you happy with your purchase.
Kindest regards,
Pat
-Email your questions and order request (with mailing address included) and I will email back an order confirmation with payment instructions-
Pat -
West Coast Engineering
Comparison of the ROCKDock with LEE Precision's recent press mount offering...
LEE needs a tool to tighten your press down each change. The ROCKDock doesn't.
LEE is pretty much limited to their presses. The ROCKDock accomodates their presses as well as ALL other manufacturers presses, Mecs, Dillons, progressives, turrets, lube presses and case prep tools, and powder measures.
LEE uses plywood for a base you have to drill on your own. The ROCKDock uses machined 6061 T6 aircraft aluminum and high quality mounting hardware, predrilled to fit your press.
LEE has no lube heater function. The ROCKDock is a true lube press heater w/lube shelf.
The ROCKDock is a once in a lifetime purchase for only $14.95 more to mount a LEE press, and is a sleek- fine peice and rock solid quality mount that enhances the look and function of your reloading bench.
The ROCKDock.... IS no comparison...
-This website is under construction and will include all of our products and information soon.-