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Frequently Asked Questions About Dowel Pins
How to use a Pre-Glued Dowel Pin

The Original Pre-Glued Accu-Pin® Pre-Glued Dowel Pins

The Original Pre-Glued Accu-Pin®
Patented and Tested

  • The pre-glued dowel offers 100% glue coverage, creating superior holding strength.
  • Significant savings and increased production are created by the elimination of production stoppages for routine maintenance on dowel insertion equipment caused by glue buildup.
  • A reduction of glue purchases results in significant and immediate savings. Reduced waste from spillage, over-spraying and premature disposal of glue barrels offers additional savings.
  • Dry joints caused by injection misfires due to clogged glue lines are eliminated. Water runs consistently through glue lines.
  • Cleanup time on your project during and after assembly due to glue mess and squeeze out is eliminated.
  • Pre-glued dowel pins are available in fractional and metric sizes as either multi-grooved (fluted) or spiral grooved.
Dowel Pin Tolerances
Diameter +/- .005
Length +/- 1/32nd
Moisture6% - 8%
Fractional Pre-Glued Dowel Pins Available Sizes
¼"5/16"
3/8"7/16"
½" 
Metric Pre-Glued Dowel Pins Available Sizes
5mm6mm
8mm10mm
12mm 
Pre-Glued Dowel Pins are offered in Blue or Clear Colored Glue.

Please call for our pricing structure. 1-630-775-9300



How to use a Pre-Glued Dowel Pin
Simply replace your glue with water.

If you are using automatic insertion equipment:

  1. Clean and drain all glue from your glue system and inserting nozzle. (It is recommended that you clean lines with hot water to thoroughly flush out all the glue.)
  2. Replace glue with water and lower pot pressure to between 10-20 PSI to compensate for water viscosity.
  3. Fill hopper with Pre-Glued Dowel Pins and begin.

If you are inserting dowels by hand:

The most common water application methods are: a spray mist bottle, a standard squeeze bottle and a pressure pot system.

  1. For a spray mist bottle, adjust the nozzle to a fine mist. Hold the sprayer next to the hole and spray once or twice daily into the hole then insert the dowel.
  2. For a squeeze type bottle, fill the hole approximately 1/3 with water and then insert the dowel.
  3. For a pressure pot system, lower the pot pressure to between 10-20 psi and adjust the gun nozzle to a short open time. Fill hole approximately 1/3 with water and then insert the dowel.

Note: Glue may be used in conjunction with the Pre-Glued Dowel Pin. This is typically done when gluing side panels or short depth applications.



Frequently Asked Questions About Dowel Pins


Are Plain or Pre-Glued Dowels better?
Will Pre-Glued Dowels or water damage our panels?
What pressure should be used for Plain and Pre-Glued Dowel Pins?



Are Plain or Pre-Glued Dowels better?

A proper diameter dowel, in a proper diameter hole, applied by an automatic machine will produce a stronger joint with a pre-glued dowel than with conventional dowels and glue. This occurs because glue applied by an automatic machine does not coat the entire circumference of the hole, compared to water which tends to completely coat the hole due to its lower viscosity. Anytime an improper fit occurs because of the dowel or the bore, conventional dowels and glue will produce a stronger joint. The primary reason is because a pre-glued dowel will not fill any voids.


Will Pre-Glued Dowels or water damage our panels?
Pre-Glued Dowels and water can damage panels if they are not used properly. Generally, the problem does not manifest itself in solid wood. You are more likely to see it in plywood panels. If the depth of the hole and the length of the dowel are proper, then there is no void left to trap water. The water may then bleed though to the surface. To prevent this possible occurrence, only two things are necessary; proper hole depth and proper dowel length. If used properly, you should not experience and discoloration problems.


What pressure should be used for Plain and Pre-Glued Dowel Pins?
Generally, 10-20 psi is all that is needed for water to activate Pre-Glued Dowels. If you have been using glue, you may need to decrease the time that the glue valve is open to avoid injecting too much water into the hole. When using plain dowel pins, a good rule of thumb with glue is the higher the pressure the better. Higher pressures will help the glue nozzles clean themselves. When they are kept clean they will perform much better.

Please keep in mind that these are general rules of thumb and that specific applications need to be addressed on an individual basis.



Note Prices effective November, 2001 and are subject to change without notice.

Excel Dowel
2002 © All Rights Reserved

HQ Phone 630-775-9300
Email info@exceldowel.com

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